21779290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 23127110

約数列:

[1, 2, 5, 10, 13, 26, 29, 53, 58, 65, 106, 109, 130, 145, 218, 265, 290, 377, 530, 545, 689, 754, 1090, 1378, 1417, 1537, 1885, 2834, 3074, 3161, 3445, 3770, 5777, 6322, 6890, 7085, 7685, 11554, 14170, 15370, 15805, 19981, 28885, 31610, 39962, 41093, 57770, 75101, 82186, 99905, 150202, 167533, 199810, 205465, 335066, 375505, 410930, 751010, 837665, 1675330, 2177929, 4355858, 10889645, 21779290]

約数ペア:

[(1, 21779290), (2, 10889645), (5, 4355858), (10, 2177929), (13, 1675330), (26, 837665), (29, 751010), (53, 410930), (58, 375505), (65, 335066), (106, 205465), (109, 199810), (130, 167533), (145, 150202), (218, 99905), (265, 82186), (290, 75101), (377, 57770), (530, 41093), (545, 39962), (689, 31610), (754, 28885), (1090, 19981), (1378, 15805), (1417, 15370), (1537, 14170), (1885, 11554), (2834, 7685), (3074, 7085), (3161, 6890), (3445, 6322), (3770, 5777)]