20949916

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1823}}^1$

素因数の和:1870

約数の個数: 36

約数和(自身を含む): 42057792

約数和(自身を除く): 21107876

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 169, 221, 338, 442, 676, 884, 1823, 2873, 3646, 5746, 7292, 11492, 23699, 30991, 47398, 61982, 94796, 123964, 308087, 402883, 616174, 805766, 1232348, 1611532, 5237479, 10474958, 20949916]

約数ペア:

[(1, 20949916), (2, 10474958), (4, 5237479), (13, 1611532), (17, 1232348), (26, 805766), (34, 616174), (52, 402883), (68, 308087), (169, 123964), (221, 94796), (338, 61982), (442, 47398), (676, 30991), (884, 23699), (1823, 11492), (2873, 7292), (3646, 5746)]