15554920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 37396800

約数和(自身を除く): 21841880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 97, 152, 190, 194, 211, 380, 388, 422, 485, 760, 776, 844, 970, 1055, 1688, 1843, 1940, 2110, 3686, 3880, 4009, 4220, 7372, 8018, 8440, 9215, 14744, 16036, 18430, 20045, 20467, 32072, 36860, 40090, 40934, 73720, 80180, 81868, 102335, 160360, 163736, 204670, 388873, 409340, 777746, 818680, 1555492, 1944365, 3110984, 3888730, 7777460, 15554920]

約数ペア:

[(1, 15554920), (2, 7777460), (4, 3888730), (5, 3110984), (8, 1944365), (10, 1555492), (19, 818680), (20, 777746), (38, 409340), (40, 388873), (76, 204670), (95, 163736), (97, 160360), (152, 102335), (190, 81868), (194, 80180), (211, 73720), (380, 40934), (388, 40090), (422, 36860), (485, 32072), (760, 20467), (776, 20045), (844, 18430), (970, 16036), (1055, 14744), (1688, 9215), (1843, 8440), (1940, 8018), (2110, 7372), (3686, 4220), (3880, 4009)]