51681640

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 120528000

約数和(自身を除く): 68846360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 61, 118, 122, 236, 244, 295, 305, 359, 472, 488, 590, 610, 718, 1180, 1220, 1436, 1795, 2360, 2440, 2872, 3590, 3599, 7180, 7198, 14360, 14396, 17995, 21181, 21899, 28792, 35990, 42362, 43798, 71980, 84724, 87596, 105905, 109495, 143960, 169448, 175192, 211810, 218990, 423620, 437980, 847240, 875960, 1292041, 2584082, 5168164, 6460205, 10336328, 12920410, 25840820, 51681640]

約数ペア:

[(1, 51681640), (2, 25840820), (4, 12920410), (5, 10336328), (8, 6460205), (10, 5168164), (20, 2584082), (40, 1292041), (59, 875960), (61, 847240), (118, 437980), (122, 423620), (236, 218990), (244, 211810), (295, 175192), (305, 169448), (359, 143960), (472, 109495), (488, 105905), (590, 87596), (610, 84724), (718, 71980), (1180, 43798), (1220, 42362), (1436, 35990), (1795, 28792), (2360, 21899), (2440, 21181), (2872, 17995), (3590, 14396), (3599, 14360), (7180, 7198)]