31979480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 78472800

約数和(自身を除く): 46493320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 89, 104, 130, 178, 260, 356, 445, 520, 691, 712, 890, 1157, 1382, 1780, 2314, 2764, 3455, 3560, 4628, 5528, 5785, 6910, 8983, 9256, 11570, 13820, 17966, 23140, 27640, 35932, 44915, 46280, 61499, 71864, 89830, 122998, 179660, 245996, 307495, 359320, 491992, 614990, 799487, 1229980, 1598974, 2459960, 3197948, 3997435, 6395896, 7994870, 15989740, 31979480]

約数ペア:

[(1, 31979480), (2, 15989740), (4, 7994870), (5, 6395896), (8, 3997435), (10, 3197948), (13, 2459960), (20, 1598974), (26, 1229980), (40, 799487), (52, 614990), (65, 491992), (89, 359320), (104, 307495), (130, 245996), (178, 179660), (260, 122998), (356, 89830), (445, 71864), (520, 61499), (691, 46280), (712, 44915), (890, 35932), (1157, 27640), (1382, 23140), (1780, 17966), (2314, 13820), (2764, 11570), (3455, 9256), (3560, 8983), (4628, 6910), (5528, 5785)]