31383280

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:242

約数の個数: 80

約数和(自身を含む): 76111200

約数和(自身を除く): 44727920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 61, 80, 109, 118, 122, 218, 236, 244, 295, 305, 436, 472, 488, 545, 590, 610, 872, 944, 976, 1090, 1180, 1220, 1744, 2180, 2360, 2440, 3599, 4360, 4720, 4880, 6431, 6649, 7198, 8720, 12862, 13298, 14396, 17995, 25724, 26596, 28792, 32155, 33245, 35990, 51448, 53192, 57584, 64310, 66490, 71980, 102896, 106384, 128620, 132980, 143960, 257240, 265960, 287920, 392291, 514480, 531920, 784582, 1569164, 1961455, 3138328, 3922910, 6276656, 7845820, 15691640, 31383280]

約数ペア:

[(1, 31383280), (2, 15691640), (4, 7845820), (5, 6276656), (8, 3922910), (10, 3138328), (16, 1961455), (20, 1569164), (40, 784582), (59, 531920), (61, 514480), (80, 392291), (109, 287920), (118, 265960), (122, 257240), (218, 143960), (236, 132980), (244, 128620), (295, 106384), (305, 102896), (436, 71980), (472, 66490), (488, 64310), (545, 57584), (590, 53192), (610, 51448), (872, 35990), (944, 33245), (976, 32155), (1090, 28792), (1180, 26596), (1220, 25724), (1744, 17995), (2180, 14396), (2360, 13298), (2440, 12862), (3599, 8720), (4360, 7198), (4720, 6649), (4880, 6431)]