15691640

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 36828000

約数和(自身を除く): 21136360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 61, 109, 118, 122, 218, 236, 244, 295, 305, 436, 472, 488, 545, 590, 610, 872, 1090, 1180, 1220, 2180, 2360, 2440, 3599, 4360, 6431, 6649, 7198, 12862, 13298, 14396, 17995, 25724, 26596, 28792, 32155, 33245, 35990, 51448, 53192, 64310, 66490, 71980, 128620, 132980, 143960, 257240, 265960, 392291, 784582, 1569164, 1961455, 3138328, 3922910, 7845820, 15691640]

約数ペア:

[(1, 15691640), (2, 7845820), (4, 3922910), (5, 3138328), (8, 1961455), (10, 1569164), (20, 784582), (40, 392291), (59, 265960), (61, 257240), (109, 143960), (118, 132980), (122, 128620), (218, 71980), (236, 66490), (244, 64310), (295, 53192), (305, 51448), (436, 35990), (472, 33245), (488, 32155), (545, 28792), (590, 26596), (610, 25724), (872, 17995), (1090, 14396), (1180, 13298), (1220, 12862), (2180, 7198), (2360, 6649), (2440, 6431), (3599, 4360)]