21162218

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 41023584

約数和(自身を除く): 19861366

約数列:

[1, 2, 7, 11, 14, 22, 49, 67, 77, 98, 134, 154, 293, 469, 539, 586, 737, 938, 1078, 1474, 2051, 3223, 3283, 4102, 5159, 6446, 6566, 10318, 14357, 19631, 22561, 28714, 36113, 39262, 45122, 72226, 137417, 157927, 215941, 274834, 315854, 431882, 961919, 1511587, 1923838, 3023174, 10581109, 21162218]

約数ペア:

[(1, 21162218), (2, 10581109), (7, 3023174), (11, 1923838), (14, 1511587), (22, 961919), (49, 431882), (67, 315854), (77, 274834), (98, 215941), (134, 157927), (154, 137417), (293, 72226), (469, 45122), (539, 39262), (586, 36113), (737, 28714), (938, 22561), (1078, 19631), (1474, 14357), (2051, 10318), (3223, 6566), (3283, 6446), (4102, 5159)]