51215580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:580

約数の個数: 144

約数和(自身を含む): 171531360

約数和(自身を除く): 120315780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 43, 45, 52, 60, 65, 78, 86, 90, 117, 129, 130, 156, 172, 180, 195, 215, 234, 258, 260, 387, 390, 430, 468, 509, 516, 559, 585, 645, 774, 780, 860, 1018, 1118, 1170, 1290, 1527, 1548, 1677, 1935, 2036, 2236, 2340, 2545, 2580, 2795, 3054, 3354, 3870, 4581, 5031, 5090, 5590, 6108, 6617, 6708, 7635, 7740, 8385, 9162, 10062, 10180, 11180, 13234, 15270, 16770, 18324, 19851, 20124, 21887, 22905, 25155, 26468, 30540, 33085, 33540, 39702, 43774, 45810, 50310, 59553, 65661, 66170, 79404, 87548, 91620, 99255, 100620, 109435, 119106, 131322, 132340, 196983, 198510, 218870, 238212, 262644, 284531, 297765, 328305, 393966, 397020, 437740, 569062, 595530, 656610, 787932, 853593, 984915, 1138124, 1191060, 1313220, 1422655, 1707186, 1969830, 2560779, 2845310, 3414372, 3939660, 4267965, 5121558, 5690620, 8535930, 10243116, 12803895, 17071860, 25607790, 51215580]

約数ペア:

[(1, 51215580), (2, 25607790), (3, 17071860), (4, 12803895), (5, 10243116), (6, 8535930), (9, 5690620), (10, 5121558), (12, 4267965), (13, 3939660), (15, 3414372), (18, 2845310), (20, 2560779), (26, 1969830), (30, 1707186), (36, 1422655), (39, 1313220), (43, 1191060), (45, 1138124), (52, 984915), (60, 853593), (65, 787932), (78, 656610), (86, 595530), (90, 569062), (117, 437740), (129, 397020), (130, 393966), (156, 328305), (172, 297765), (180, 284531), (195, 262644), (215, 238212), (234, 218870), (258, 198510), (260, 196983), (387, 132340), (390, 131322), (430, 119106), (468, 109435), (509, 100620), (516, 99255), (559, 91620), (585, 87548), (645, 79404), (774, 66170), (780, 65661), (860, 59553), (1018, 50310), (1118, 45810), (1170, 43774), (1290, 39702), (1527, 33540), (1548, 33085), (1677, 30540), (1935, 26468), (2036, 25155), (2236, 22905), (2340, 21887), (2545, 20124), (2580, 19851), (2795, 18324), (3054, 16770), (3354, 15270), (3870, 13234), (4581, 11180), (5031, 10180), (5090, 10062), (5590, 9162), (6108, 8385), (6617, 7740), (6708, 7635)]