21258986

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{349}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 38640000

約数和(自身を除く): 17381014

約数列:

[1, 2, 7, 14, 19, 38, 133, 229, 266, 349, 458, 698, 1603, 2443, 3206, 4351, 4886, 6631, 8702, 13262, 30457, 46417, 60914, 79921, 92834, 159842, 559447, 1118894, 1518499, 3036998, 10629493, 21258986]

約数ペア:

[(1, 21258986), (2, 10629493), (7, 3036998), (14, 1518499), (19, 1118894), (38, 559447), (133, 159842), (229, 92834), (266, 79921), (349, 60914), (458, 46417), (698, 30457), (1603, 13262), (2443, 8702), (3206, 6631), (4351, 4886)]