21332818

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:318

約数の個数: 32

約数和(自身を含む): 35680176

約数和(自身を除く): 14347358

約数列:

[1, 2, 13, 26, 53, 106, 113, 137, 226, 274, 689, 1378, 1469, 1781, 2938, 3562, 5989, 7261, 11978, 14522, 15481, 30962, 77857, 94393, 155714, 188786, 201253, 402506, 820493, 1640986, 10666409, 21332818]

約数ペア:

[(1, 21332818), (2, 10666409), (13, 1640986), (26, 820493), (53, 402506), (106, 201253), (113, 188786), (137, 155714), (226, 94393), (274, 77857), (689, 30962), (1378, 15481), (1469, 14522), (1781, 11978), (2938, 7261), (3562, 5989)]