21266686

素因数分解:

$2^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{1069}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 38520000

約数和(自身を除く): 17253314

約数列:

[1, 2, 7, 14, 29, 49, 58, 98, 203, 343, 406, 686, 1069, 1421, 2138, 2842, 7483, 9947, 14966, 19894, 31001, 52381, 62002, 104762, 217007, 366667, 434014, 733334, 1519049, 3038098, 10633343, 21266686]

約数ペア:

[(1, 21266686), (2, 10633343), (7, 3038098), (14, 1519049), (29, 733334), (49, 434014), (58, 366667), (98, 217007), (203, 104762), (343, 62002), (406, 52381), (686, 31001), (1069, 19894), (1421, 14966), (2138, 9947), (2842, 7483)]