81499620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1019}}^1$

素因数の和:1105

約数の個数: 96

約数和(自身を含む): 241274880

約数和(自身を除く): 159775260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 43, 60, 62, 86, 93, 124, 129, 155, 172, 186, 215, 258, 310, 372, 430, 465, 516, 620, 645, 860, 930, 1019, 1290, 1333, 1860, 2038, 2580, 2666, 3057, 3999, 4076, 5095, 5332, 6114, 6665, 7998, 10190, 12228, 13330, 15285, 15996, 19995, 20380, 26660, 30570, 31589, 39990, 43817, 61140, 63178, 79980, 87634, 94767, 126356, 131451, 157945, 175268, 189534, 219085, 262902, 315890, 379068, 438170, 473835, 525804, 631780, 657255, 876340, 947670, 1314510, 1358327, 1895340, 2629020, 2716654, 4074981, 5433308, 6791635, 8149962, 13583270, 16299924, 20374905, 27166540, 40749810, 81499620]

約数ペア:

[(1, 81499620), (2, 40749810), (3, 27166540), (4, 20374905), (5, 16299924), (6, 13583270), (10, 8149962), (12, 6791635), (15, 5433308), (20, 4074981), (30, 2716654), (31, 2629020), (43, 1895340), (60, 1358327), (62, 1314510), (86, 947670), (93, 876340), (124, 657255), (129, 631780), (155, 525804), (172, 473835), (186, 438170), (215, 379068), (258, 315890), (310, 262902), (372, 219085), (430, 189534), (465, 175268), (516, 157945), (620, 131451), (645, 126356), (860, 94767), (930, 87634), (1019, 79980), (1290, 63178), (1333, 61140), (1860, 43817), (2038, 39990), (2580, 31589), (2666, 30570), (3057, 26660), (3999, 20380), (4076, 19995), (5095, 15996), (5332, 15285), (6114, 13330), (6665, 12228), (7998, 10190)]