64638040

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 150660000

約数和(自身を除く): 86021960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 61, 118, 122, 236, 244, 295, 305, 449, 472, 488, 590, 610, 898, 1180, 1220, 1796, 2245, 2360, 2440, 3592, 3599, 4490, 7198, 8980, 14396, 17960, 17995, 26491, 27389, 28792, 35990, 52982, 54778, 71980, 105964, 109556, 132455, 136945, 143960, 211928, 219112, 264910, 273890, 529820, 547780, 1059640, 1095560, 1615951, 3231902, 6463804, 8079755, 12927608, 16159510, 32319020, 64638040]

約数ペア:

[(1, 64638040), (2, 32319020), (4, 16159510), (5, 12927608), (8, 8079755), (10, 6463804), (20, 3231902), (40, 1615951), (59, 1095560), (61, 1059640), (118, 547780), (122, 529820), (236, 273890), (244, 264910), (295, 219112), (305, 211928), (449, 143960), (472, 136945), (488, 132455), (590, 109556), (610, 105964), (898, 71980), (1180, 54778), (1220, 52982), (1796, 35990), (2245, 28792), (2360, 27389), (2440, 26491), (3592, 17995), (3599, 17960), (4490, 14396), (7198, 8980)]