221348520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:320

約数の個数: 192

約数和(自身を含む): 749548800

約数和(自身を除く): 528200280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 43, 45, 60, 72, 79, 86, 90, 120, 129, 158, 172, 180, 181, 215, 237, 258, 316, 344, 360, 362, 387, 395, 430, 474, 516, 543, 632, 645, 711, 724, 774, 790, 860, 905, 948, 1032, 1086, 1185, 1290, 1422, 1448, 1548, 1580, 1629, 1720, 1810, 1896, 1935, 2172, 2370, 2580, 2715, 2844, 3096, 3160, 3258, 3397, 3555, 3620, 3870, 4344, 4740, 5160, 5430, 5688, 6516, 6794, 7110, 7240, 7740, 7783, 8145, 9480, 10191, 10860, 13032, 13588, 14220, 14299, 15480, 15566, 16290, 16985, 20382, 21720, 23349, 27176, 28440, 28598, 30573, 31132, 32580, 33970, 38915, 40764, 42897, 46698, 50955, 57196, 61146, 62264, 65160, 67940, 70047, 71495, 77830, 81528, 85794, 93396, 101910, 114392, 116745, 122292, 128691, 135880, 140094, 142990, 152865, 155660, 171588, 186792, 203820, 214485, 233490, 244584, 257382, 280188, 285980, 305730, 311320, 343176, 350235, 407640, 428970, 466980, 514764, 560376, 571960, 611460, 614857, 643455, 700470, 857940, 933960, 1029528, 1222920, 1229714, 1286910, 1400940, 1715880, 1844571, 2459428, 2573820, 2801880, 3074285, 3689142, 4918856, 5147640, 5533713, 6148570, 7378284, 9222855, 11067426, 12297140, 14756568, 18445710, 22134852, 24594280, 27668565, 36891420, 44269704, 55337130, 73782840, 110674260, 221348520]

約数ペア:

[(1, 221348520), (2, 110674260), (3, 73782840), (4, 55337130), (5, 44269704), (6, 36891420), (8, 27668565), (9, 24594280), (10, 22134852), (12, 18445710), (15, 14756568), (18, 12297140), (20, 11067426), (24, 9222855), (30, 7378284), (36, 6148570), (40, 5533713), (43, 5147640), (45, 4918856), (60, 3689142), (72, 3074285), (79, 2801880), (86, 2573820), (90, 2459428), (120, 1844571), (129, 1715880), (158, 1400940), (172, 1286910), (180, 1229714), (181, 1222920), (215, 1029528), (237, 933960), (258, 857940), (316, 700470), (344, 643455), (360, 614857), (362, 611460), (387, 571960), (395, 560376), (430, 514764), (474, 466980), (516, 428970), (543, 407640), (632, 350235), (645, 343176), (711, 311320), (724, 305730), (774, 285980), (790, 280188), (860, 257382), (905, 244584), (948, 233490), (1032, 214485), (1086, 203820), (1185, 186792), (1290, 171588), (1422, 155660), (1448, 152865), (1548, 142990), (1580, 140094), (1629, 135880), (1720, 128691), (1810, 122292), (1896, 116745), (1935, 114392), (2172, 101910), (2370, 93396), (2580, 85794), (2715, 81528), (2844, 77830), (3096, 71495), (3160, 70047), (3258, 67940), (3397, 65160), (3555, 62264), (3620, 61146), (3870, 57196), (4344, 50955), (4740, 46698), (5160, 42897), (5430, 40764), (5688, 38915), (6516, 33970), (6794, 32580), (7110, 31132), (7240, 30573), (7740, 28598), (7783, 28440), (8145, 27176), (9480, 23349), (10191, 21720), (10860, 20382), (13032, 16985), (13588, 16290), (14220, 15566), (14299, 15480)]