81870760

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 189604800

約数和(自身を除く): 107734040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 113, 118, 226, 236, 295, 307, 452, 472, 565, 590, 614, 904, 1130, 1180, 1228, 1535, 2260, 2360, 2456, 3070, 4520, 6140, 6667, 12280, 13334, 18113, 26668, 33335, 34691, 36226, 53336, 66670, 69382, 72452, 90565, 133340, 138764, 144904, 173455, 181130, 266680, 277528, 346910, 362260, 693820, 724520, 1387640, 2046769, 4093538, 8187076, 10233845, 16374152, 20467690, 40935380, 81870760]

約数ペア:

[(1, 81870760), (2, 40935380), (4, 20467690), (5, 16374152), (8, 10233845), (10, 8187076), (20, 4093538), (40, 2046769), (59, 1387640), (113, 724520), (118, 693820), (226, 362260), (236, 346910), (295, 277528), (307, 266680), (452, 181130), (472, 173455), (565, 144904), (590, 138764), (614, 133340), (904, 90565), (1130, 72452), (1180, 69382), (1228, 66670), (1535, 53336), (2260, 36226), (2360, 34691), (2456, 33335), (3070, 26668), (4520, 18113), (6140, 13334), (6667, 12280)]