20828340

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:100

約数の個数: 240

約数和(自身を含む): 75132288

約数和(自身を除く): 54303948

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 27, 30, 36, 39, 43, 45, 46, 52, 54, 60, 65, 69, 78, 81, 86, 90, 92, 108, 115, 117, 129, 130, 135, 138, 156, 162, 172, 180, 195, 207, 215, 230, 234, 258, 260, 270, 276, 299, 324, 345, 351, 387, 390, 405, 414, 430, 460, 468, 516, 540, 559, 585, 598, 621, 645, 690, 702, 774, 780, 810, 828, 860, 897, 989, 1035, 1053, 1118, 1161, 1170, 1196, 1242, 1290, 1380, 1404, 1495, 1548, 1620, 1677, 1755, 1794, 1863, 1935, 1978, 2070, 2106, 2236, 2322, 2340, 2484, 2580, 2691, 2795, 2967, 2990, 3105, 3354, 3483, 3510, 3588, 3726, 3870, 3956, 4140, 4212, 4485, 4644, 4945, 5031, 5265, 5382, 5590, 5805, 5934, 5980, 6210, 6708, 6966, 7020, 7452, 7740, 8073, 8385, 8901, 8970, 9315, 9890, 10062, 10530, 10764, 11180, 11610, 11868, 12420, 12857, 13455, 13932, 14835, 15093, 16146, 16770, 17415, 17802, 17940, 18630, 19780, 20124, 21060, 23220, 24219, 25155, 25714, 26703, 26910, 29670, 30186, 32292, 33540, 34830, 35604, 37260, 38571, 40365, 44505, 45279, 48438, 50310, 51428, 53406, 53820, 59340, 60372, 64285, 69660, 75465, 77142, 80109, 80730, 89010, 90558, 96876, 100620, 106812, 115713, 121095, 128570, 133515, 150930, 154284, 160218, 161460, 178020, 181116, 192855, 226395, 231426, 242190, 257140, 267030, 301860, 320436, 347139, 385710, 400545, 452790, 462852, 484380, 534060, 578565, 694278, 771420, 801090, 905580, 1041417, 1157130, 1388556, 1602180, 1735695, 2082834, 2314260, 3471390, 4165668, 5207085, 6942780, 10414170, 20828340]

約数ペア:

[(1, 20828340), (2, 10414170), (3, 6942780), (4, 5207085), (5, 4165668), (6, 3471390), (9, 2314260), (10, 2082834), (12, 1735695), (13, 1602180), (15, 1388556), (18, 1157130), (20, 1041417), (23, 905580), (26, 801090), (27, 771420), (30, 694278), (36, 578565), (39, 534060), (43, 484380), (45, 462852), (46, 452790), (52, 400545), (54, 385710), (60, 347139), (65, 320436), (69, 301860), (78, 267030), (81, 257140), (86, 242190), (90, 231426), (92, 226395), (108, 192855), (115, 181116), (117, 178020), (129, 161460), (130, 160218), (135, 154284), (138, 150930), (156, 133515), (162, 128570), (172, 121095), (180, 115713), (195, 106812), (207, 100620), (215, 96876), (230, 90558), (234, 89010), (258, 80730), (260, 80109), (270, 77142), (276, 75465), (299, 69660), (324, 64285), (345, 60372), (351, 59340), (387, 53820), (390, 53406), (405, 51428), (414, 50310), (430, 48438), (460, 45279), (468, 44505), (516, 40365), (540, 38571), (559, 37260), (585, 35604), (598, 34830), (621, 33540), (645, 32292), (690, 30186), (702, 29670), (774, 26910), (780, 26703), (810, 25714), (828, 25155), (860, 24219), (897, 23220), (989, 21060), (1035, 20124), (1053, 19780), (1118, 18630), (1161, 17940), (1170, 17802), (1196, 17415), (1242, 16770), (1290, 16146), (1380, 15093), (1404, 14835), (1495, 13932), (1548, 13455), (1620, 12857), (1677, 12420), (1755, 11868), (1794, 11610), (1863, 11180), (1935, 10764), (1978, 10530), (2070, 10062), (2106, 9890), (2236, 9315), (2322, 8970), (2340, 8901), (2484, 8385), (2580, 8073), (2691, 7740), (2795, 7452), (2967, 7020), (2990, 6966), (3105, 6708), (3354, 6210), (3483, 5980), (3510, 5934), (3588, 5805), (3726, 5590), (3870, 5382), (3956, 5265), (4140, 5031), (4212, 4945), (4485, 4644)]