81976980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{113}}^2$

素因数の和:345

約数の個数: 72

約数和(自身を含む): 233749152

約数和(自身を除く): 151772172

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 107, 113, 214, 226, 321, 339, 428, 452, 535, 565, 642, 678, 1070, 1130, 1284, 1356, 1605, 1695, 2140, 2260, 3210, 3390, 6420, 6780, 12091, 12769, 24182, 25538, 36273, 38307, 48364, 51076, 60455, 63845, 72546, 76614, 120910, 127690, 145092, 153228, 181365, 191535, 241820, 255380, 362730, 383070, 725460, 766140, 1366283, 2732566, 4098849, 5465132, 6831415, 8197698, 13662830, 16395396, 20494245, 27325660, 40988490, 81976980]

約数ペア:

[(1, 81976980), (2, 40988490), (3, 27325660), (4, 20494245), (5, 16395396), (6, 13662830), (10, 8197698), (12, 6831415), (15, 5465132), (20, 4098849), (30, 2732566), (60, 1366283), (107, 766140), (113, 725460), (214, 383070), (226, 362730), (321, 255380), (339, 241820), (428, 191535), (452, 181365), (535, 153228), (565, 145092), (642, 127690), (678, 120910), (1070, 76614), (1130, 72546), (1284, 63845), (1356, 60455), (1605, 51076), (1695, 48364), (2140, 38307), (2260, 36273), (3210, 25538), (3390, 24182), (6420, 12769), (6780, 12091)]