81476760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:289

約数の個数: 128

約数和(自身を含む): 253186560

約数和(自身を除く): 171709800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 73, 120, 131, 142, 146, 213, 219, 262, 284, 292, 355, 365, 393, 426, 438, 524, 568, 584, 655, 710, 730, 786, 852, 876, 1048, 1065, 1095, 1310, 1420, 1460, 1572, 1704, 1752, 1965, 2130, 2190, 2620, 2840, 2920, 3144, 3930, 4260, 4380, 5183, 5240, 7860, 8520, 8760, 9301, 9563, 10366, 15549, 15720, 18602, 19126, 20732, 25915, 27903, 28689, 31098, 37204, 38252, 41464, 46505, 47815, 51830, 55806, 57378, 62196, 74408, 76504, 77745, 93010, 95630, 103660, 111612, 114756, 124392, 139515, 143445, 155490, 186020, 191260, 207320, 223224, 229512, 279030, 286890, 310980, 372040, 382520, 558060, 573780, 621960, 678973, 1116120, 1147560, 1357946, 2036919, 2715892, 3394865, 4073838, 5431784, 6789730, 8147676, 10184595, 13579460, 16295352, 20369190, 27158920, 40738380, 81476760]

約数ペア:

[(1, 81476760), (2, 40738380), (3, 27158920), (4, 20369190), (5, 16295352), (6, 13579460), (8, 10184595), (10, 8147676), (12, 6789730), (15, 5431784), (20, 4073838), (24, 3394865), (30, 2715892), (40, 2036919), (60, 1357946), (71, 1147560), (73, 1116120), (120, 678973), (131, 621960), (142, 573780), (146, 558060), (213, 382520), (219, 372040), (262, 310980), (284, 286890), (292, 279030), (355, 229512), (365, 223224), (393, 207320), (426, 191260), (438, 186020), (524, 155490), (568, 143445), (584, 139515), (655, 124392), (710, 114756), (730, 111612), (786, 103660), (852, 95630), (876, 93010), (1048, 77745), (1065, 76504), (1095, 74408), (1310, 62196), (1420, 57378), (1460, 55806), (1572, 51830), (1704, 47815), (1752, 46505), (1965, 41464), (2130, 38252), (2190, 37204), (2620, 31098), (2840, 28689), (2920, 27903), (3144, 25915), (3930, 20732), (4260, 19126), (4380, 18602), (5183, 15720), (5240, 15549), (7860, 10366), (8520, 9563), (8760, 9301)]