163238440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:670

約数の個数: 64

約数和(自身を含む): 376650000

約数和(自身を除く): 213411560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 149, 244, 298, 305, 449, 488, 596, 610, 745, 898, 1192, 1220, 1490, 1796, 2245, 2440, 2980, 3592, 4490, 5960, 8980, 9089, 17960, 18178, 27389, 36356, 45445, 54778, 66901, 72712, 90890, 109556, 133802, 136945, 181780, 219112, 267604, 273890, 334505, 363560, 535208, 547780, 669010, 1095560, 1338020, 2676040, 4080961, 8161922, 16323844, 20404805, 32647688, 40809610, 81619220, 163238440]

約数ペア:

[(1, 163238440), (2, 81619220), (4, 40809610), (5, 32647688), (8, 20404805), (10, 16323844), (20, 8161922), (40, 4080961), (61, 2676040), (122, 1338020), (149, 1095560), (244, 669010), (298, 547780), (305, 535208), (449, 363560), (488, 334505), (596, 273890), (610, 267604), (745, 219112), (898, 181780), (1192, 136945), (1220, 133802), (1490, 109556), (1796, 90890), (2245, 72712), (2440, 66901), (2980, 54778), (3592, 45445), (4490, 36356), (5960, 27389), (8980, 18178), (9089, 17960)]