21523460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153739}}^1$

素因数の和:153755

約数の個数: 24

約数和(自身を含む): 51656640

約数和(自身を除く): 30133180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153739, 307478, 614956, 768695, 1076173, 1537390, 2152346, 3074780, 4304692, 5380865, 10761730, 21523460]

約数ペア:

[(1, 21523460), (2, 10761730), (4, 5380865), (5, 4304692), (7, 3074780), (10, 2152346), (14, 1537390), (20, 1076173), (28, 768695), (35, 614956), (70, 307478), (140, 153739)]