64824040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 149688000

約数和(自身を除く): 84863960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 131, 139, 178, 262, 278, 356, 445, 524, 556, 655, 695, 712, 890, 1048, 1112, 1310, 1390, 1780, 2620, 2780, 3560, 5240, 5560, 11659, 12371, 18209, 23318, 24742, 36418, 46636, 49484, 58295, 61855, 72836, 91045, 93272, 98968, 116590, 123710, 145672, 182090, 233180, 247420, 364180, 466360, 494840, 728360, 1620601, 3241202, 6482404, 8103005, 12964808, 16206010, 32412020, 64824040]

約数ペア:

[(1, 64824040), (2, 32412020), (4, 16206010), (5, 12964808), (8, 8103005), (10, 6482404), (20, 3241202), (40, 1620601), (89, 728360), (131, 494840), (139, 466360), (178, 364180), (262, 247420), (278, 233180), (356, 182090), (445, 145672), (524, 123710), (556, 116590), (655, 98968), (695, 93272), (712, 91045), (890, 72836), (1048, 61855), (1112, 58295), (1310, 49484), (1390, 46636), (1780, 36418), (2620, 24742), (2780, 23318), (3560, 18209), (5240, 12371), (5560, 11659)]