21590260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{359}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 25826060

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 97, 124, 155, 194, 310, 359, 388, 485, 620, 718, 970, 1436, 1795, 1940, 3007, 3590, 6014, 7180, 11129, 12028, 15035, 22258, 30070, 34823, 44516, 55645, 60140, 69646, 111290, 139292, 174115, 222580, 348230, 696460, 1079513, 2159026, 4318052, 5397565, 10795130, 21590260]

約数ペア:

[(1, 21590260), (2, 10795130), (4, 5397565), (5, 4318052), (10, 2159026), (20, 1079513), (31, 696460), (62, 348230), (97, 222580), (124, 174115), (155, 139292), (194, 111290), (310, 69646), (359, 60140), (388, 55645), (485, 44516), (620, 34823), (718, 30070), (970, 22258), (1436, 15035), (1795, 12028), (1940, 11129), (3007, 7180), (3590, 6014)]