81443640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{2141}}^1$

素因数の和:2472

約数の個数: 64

約数和(自身を含む): 245216160

約数和(自身を除く): 163772520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 317, 634, 951, 1268, 1585, 1902, 2141, 2536, 3170, 3804, 4282, 4755, 6340, 6423, 7608, 8564, 9510, 10705, 12680, 12846, 17128, 19020, 21410, 25692, 32115, 38040, 42820, 51384, 64230, 85640, 128460, 256920, 678697, 1357394, 2036091, 2714788, 3393485, 4072182, 5429576, 6786970, 8144364, 10180455, 13573940, 16288728, 20360910, 27147880, 40721820, 81443640]

約数ペア:

[(1, 81443640), (2, 40721820), (3, 27147880), (4, 20360910), (5, 16288728), (6, 13573940), (8, 10180455), (10, 8144364), (12, 6786970), (15, 5429576), (20, 4072182), (24, 3393485), (30, 2714788), (40, 2036091), (60, 1357394), (120, 678697), (317, 256920), (634, 128460), (951, 85640), (1268, 64230), (1585, 51384), (1902, 42820), (2141, 38040), (2536, 32115), (3170, 25692), (3804, 21410), (4282, 19020), (4755, 17128), (6340, 12846), (6423, 12680), (7608, 10705), (8564, 9510)]