31915720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 75841920

約数和(自身を除く): 43926200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 113, 115, 184, 226, 230, 307, 452, 460, 565, 614, 904, 920, 1130, 1228, 1535, 2260, 2456, 2599, 3070, 4520, 5198, 6140, 7061, 10396, 12280, 12995, 14122, 20792, 25990, 28244, 34691, 35305, 51980, 56488, 69382, 70610, 103960, 138764, 141220, 173455, 277528, 282440, 346910, 693820, 797893, 1387640, 1595786, 3191572, 3989465, 6383144, 7978930, 15957860, 31915720]

約数ペア:

[(1, 31915720), (2, 15957860), (4, 7978930), (5, 6383144), (8, 3989465), (10, 3191572), (20, 1595786), (23, 1387640), (40, 797893), (46, 693820), (92, 346910), (113, 282440), (115, 277528), (184, 173455), (226, 141220), (230, 138764), (307, 103960), (452, 70610), (460, 69382), (565, 56488), (614, 51980), (904, 35305), (920, 34691), (1130, 28244), (1228, 25990), (1535, 20792), (2260, 14122), (2456, 12995), (2599, 12280), (3070, 10396), (4520, 7061), (5198, 6140)]