21315644

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 45427200

約数和(自身を除く): 24111556

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 103, 133, 206, 266, 389, 412, 532, 721, 778, 1442, 1556, 1957, 2723, 2884, 3914, 5446, 7391, 7828, 10892, 13699, 14782, 27398, 29564, 40067, 51737, 54796, 80134, 103474, 160268, 206948, 280469, 560938, 761273, 1121876, 1522546, 3045092, 5328911, 10657822, 21315644]

約数ペア:

[(1, 21315644), (2, 10657822), (4, 5328911), (7, 3045092), (14, 1522546), (19, 1121876), (28, 761273), (38, 560938), (76, 280469), (103, 206948), (133, 160268), (206, 103474), (266, 80134), (389, 54796), (412, 51737), (532, 40067), (721, 29564), (778, 27398), (1442, 14782), (1556, 13699), (1957, 10892), (2723, 7828), (2884, 7391), (3914, 5446)]