20856110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{587}}^1$

素因数の和:641

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 24866770

約数列:

[1, 2, 5, 10, 11, 17, 19, 22, 34, 38, 55, 85, 95, 110, 170, 187, 190, 209, 323, 374, 418, 587, 646, 935, 1045, 1174, 1615, 1870, 2090, 2935, 3230, 3553, 5870, 6457, 7106, 9979, 11153, 12914, 17765, 19958, 22306, 32285, 35530, 49895, 55765, 64570, 99790, 109769, 111530, 122683, 189601, 219538, 245366, 379202, 548845, 613415, 948005, 1097690, 1226830, 1896010, 2085611, 4171222, 10428055, 20856110]

約数ペア:

[(1, 20856110), (2, 10428055), (5, 4171222), (10, 2085611), (11, 1896010), (17, 1226830), (19, 1097690), (22, 948005), (34, 613415), (38, 548845), (55, 379202), (85, 245366), (95, 219538), (110, 189601), (170, 122683), (187, 111530), (190, 109769), (209, 99790), (323, 64570), (374, 55765), (418, 49895), (587, 35530), (646, 32285), (935, 22306), (1045, 19958), (1174, 17765), (1615, 12914), (1870, 11153), (2090, 9979), (2935, 7106), (3230, 6457), (3553, 5870)]