20861204

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{257}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 45308928

約数和(自身を除く): 24447724

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 223, 257, 364, 446, 514, 892, 1028, 1561, 1799, 2899, 3122, 3341, 3598, 5798, 6244, 6682, 7196, 11596, 13364, 20293, 23387, 40586, 46774, 57311, 81172, 93548, 114622, 229244, 401177, 745043, 802354, 1490086, 1604708, 2980172, 5215301, 10430602, 20861204]

約数ペア:

[(1, 20861204), (2, 10430602), (4, 5215301), (7, 2980172), (13, 1604708), (14, 1490086), (26, 802354), (28, 745043), (52, 401177), (91, 229244), (182, 114622), (223, 93548), (257, 81172), (364, 57311), (446, 46774), (514, 40586), (892, 23387), (1028, 20293), (1561, 13364), (1799, 11596), (2899, 7196), (3122, 6682), (3341, 6244), (3598, 5798)]