21393848

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20107}}^1$

素因数の和:20139

約数の個数: 32

約数和(自身を含む): 48259200

約数和(自身を除く): 26865352

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20107, 40214, 80428, 140749, 160856, 281498, 382033, 562996, 764066, 1125992, 1528132, 2674231, 3056264, 5348462, 10696924, 21393848]

約数ペア:

[(1, 21393848), (2, 10696924), (4, 5348462), (7, 3056264), (8, 2674231), (14, 1528132), (19, 1125992), (28, 764066), (38, 562996), (56, 382033), (76, 281498), (133, 160856), (152, 140749), (266, 80428), (532, 40214), (1064, 20107)]