128621040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{4091}}^1$

素因数の和:4238

約数の個数: 80

約数和(自身を含む): 401867136

約数和(自身を除く): 273246096

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 262, 393, 524, 655, 786, 1048, 1310, 1572, 1965, 2096, 2620, 3144, 3930, 4091, 5240, 6288, 7860, 8182, 10480, 12273, 15720, 16364, 20455, 24546, 31440, 32728, 40910, 49092, 61365, 65456, 81820, 98184, 122730, 163640, 196368, 245460, 327280, 490920, 535921, 981840, 1071842, 1607763, 2143684, 2679605, 3215526, 4287368, 5359210, 6431052, 8038815, 8574736, 10718420, 12862104, 16077630, 21436840, 25724208, 32155260, 42873680, 64310520, 128621040]

約数ペア:

[(1, 128621040), (2, 64310520), (3, 42873680), (4, 32155260), (5, 25724208), (6, 21436840), (8, 16077630), (10, 12862104), (12, 10718420), (15, 8574736), (16, 8038815), (20, 6431052), (24, 5359210), (30, 4287368), (40, 3215526), (48, 2679605), (60, 2143684), (80, 1607763), (120, 1071842), (131, 981840), (240, 535921), (262, 490920), (393, 327280), (524, 245460), (655, 196368), (786, 163640), (1048, 122730), (1310, 98184), (1572, 81820), (1965, 65456), (2096, 61365), (2620, 49092), (3144, 40910), (3930, 32728), (4091, 31440), (5240, 24546), (6288, 20455), (7860, 16364), (8182, 15720), (10480, 12273)]