256403640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{31891}}^1$

素因数の和:31972

約数の個数: 64

約数和(自身を含む): 780716160

約数和(自身を除く): 524312520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 67, 120, 134, 201, 268, 335, 402, 536, 670, 804, 1005, 1340, 1608, 2010, 2680, 4020, 8040, 31891, 63782, 95673, 127564, 159455, 191346, 255128, 318910, 382692, 478365, 637820, 765384, 956730, 1275640, 1913460, 2136697, 3826920, 4273394, 6410091, 8546788, 10683485, 12820182, 17093576, 21366970, 25640364, 32050455, 42733940, 51280728, 64100910, 85467880, 128201820, 256403640]

約数ペア:

[(1, 256403640), (2, 128201820), (3, 85467880), (4, 64100910), (5, 51280728), (6, 42733940), (8, 32050455), (10, 25640364), (12, 21366970), (15, 17093576), (20, 12820182), (24, 10683485), (30, 8546788), (40, 6410091), (60, 4273394), (67, 3826920), (120, 2136697), (134, 1913460), (201, 1275640), (268, 956730), (335, 765384), (402, 637820), (536, 478365), (670, 382692), (804, 318910), (1005, 255128), (1340, 191346), (1608, 159455), (2010, 127564), (2680, 95673), (4020, 63782), (8040, 31891)]