20664124

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 41065920

約数和(自身を除く): 20401796

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 71, 116, 142, 193, 284, 377, 386, 754, 772, 923, 1508, 1846, 2059, 2509, 3692, 4118, 5018, 5597, 8236, 10036, 11194, 13703, 22388, 26767, 27406, 53534, 54812, 72761, 107068, 145522, 178139, 291044, 356278, 397387, 712556, 794774, 1589548, 5166031, 10332062, 20664124]

約数ペア:

[(1, 20664124), (2, 10332062), (4, 5166031), (13, 1589548), (26, 794774), (29, 712556), (52, 397387), (58, 356278), (71, 291044), (116, 178139), (142, 145522), (193, 107068), (284, 72761), (377, 54812), (386, 53534), (754, 27406), (772, 26767), (923, 22388), (1508, 13703), (1846, 11194), (2059, 10036), (2509, 8236), (3692, 5597), (4118, 5018)]