18821978

素因数分解:

$2^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{1289}}^1$

素因数の和:1454

約数の個数: 24

約数和(自身を含む): 33088500

約数和(自身を除く): 14266522

約数列:

[1, 2, 7, 14, 49, 98, 149, 298, 1043, 1289, 2086, 2578, 7301, 9023, 14602, 18046, 63161, 126322, 192061, 384122, 1344427, 2688854, 9410989, 18821978]

約数ペア:

[(1, 18821978), (2, 9410989), (7, 2688854), (14, 1344427), (49, 384122), (98, 192061), (149, 126322), (298, 63161), (1043, 18046), (1289, 14602), (2086, 9023), (2578, 7301)]