21120890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1667}}^1$

素因数の和:1862

約数の個数: 32

約数和(自身を含む): 43714944

約数和(自身を除く): 22594054

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 181, 362, 905, 1267, 1667, 1810, 2534, 3334, 6335, 8335, 11669, 12670, 16670, 23338, 58345, 116690, 301727, 603454, 1508635, 2112089, 3017270, 4224178, 10560445, 21120890]

約数ペア:

[(1, 21120890), (2, 10560445), (5, 4224178), (7, 3017270), (10, 2112089), (14, 1508635), (35, 603454), (70, 301727), (181, 116690), (362, 58345), (905, 23338), (1267, 16670), (1667, 12670), (1810, 11669), (2534, 8335), (3334, 6335)]