259813640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1\times {\mathrm{457}}^1$

素因数の和:762

約数の個数: 64

約数和(自身を含む): 598019760

約数和(自身を除く): 338206120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 233, 244, 305, 457, 466, 488, 610, 914, 932, 1165, 1220, 1828, 1864, 2285, 2330, 2440, 3656, 4570, 4660, 9140, 9320, 14213, 18280, 27877, 28426, 55754, 56852, 71065, 106481, 111508, 113704, 139385, 142130, 212962, 223016, 278770, 284260, 425924, 532405, 557540, 568520, 851848, 1064810, 1115080, 2129620, 4259240, 6495341, 12990682, 25981364, 32476705, 51962728, 64953410, 129906820, 259813640]

約数ペア:

[(1, 259813640), (2, 129906820), (4, 64953410), (5, 51962728), (8, 32476705), (10, 25981364), (20, 12990682), (40, 6495341), (61, 4259240), (122, 2129620), (233, 1115080), (244, 1064810), (305, 851848), (457, 568520), (466, 557540), (488, 532405), (610, 425924), (914, 284260), (932, 278770), (1165, 223016), (1220, 212962), (1828, 142130), (1864, 139385), (2285, 113704), (2330, 111508), (2440, 106481), (3656, 71065), (4570, 56852), (4660, 55754), (9140, 28426), (9320, 27877), (14213, 18280)]