18660369

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2357}}^1$

素因数の和:2409

約数の個数: 32

約数和(自身を含む): 31691520

約数和(自身を除く): 13031151

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 203, 273, 377, 609, 1131, 2357, 2639, 7071, 7917, 16499, 30641, 49497, 68353, 91923, 205059, 214487, 478471, 643461, 888589, 1435413, 2665767, 6220123, 18660369]

約数ペア:

[(1, 18660369), (3, 6220123), (7, 2665767), (13, 1435413), (21, 888589), (29, 643461), (39, 478471), (87, 214487), (91, 205059), (203, 91923), (273, 68353), (377, 49497), (609, 30641), (1131, 16499), (2357, 7917), (2639, 7071)]