20996703

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 38578176

約数和(自身を除く): 17581473

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 63, 91, 93, 117, 217, 273, 279, 403, 651, 819, 827, 1209, 1953, 2481, 2821, 3627, 5789, 7443, 8463, 10751, 17367, 25389, 25637, 32253, 52101, 75257, 76911, 96759, 179459, 225771, 230733, 333281, 538377, 677313, 999843, 1615131, 2332967, 2999529, 6998901, 20996703]

約数ペア:

[(1, 20996703), (3, 6998901), (7, 2999529), (9, 2332967), (13, 1615131), (21, 999843), (31, 677313), (39, 538377), (63, 333281), (91, 230733), (93, 225771), (117, 179459), (217, 96759), (273, 76911), (279, 75257), (403, 52101), (651, 32253), (819, 25637), (827, 25389), (1209, 17367), (1953, 10751), (2481, 8463), (2821, 7443), (3627, 5789)]