20197359

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^2\times {\mathrm{271}}^1$

素因数の和:317

約数の個数: 54

約数和(自身を含む): 36884016

約数和(自身を除く): 16686657

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 169, 271, 273, 441, 507, 637, 813, 819, 1183, 1521, 1897, 1911, 2439, 3523, 3549, 5691, 5733, 8281, 10569, 10647, 13279, 17073, 24661, 24843, 31707, 39837, 45799, 73983, 74529, 119511, 137397, 172627, 221949, 320593, 412191, 517881, 961779, 1553643, 2244151, 2885337, 6732453, 20197359]

約数ペア:

[(1, 20197359), (3, 6732453), (7, 2885337), (9, 2244151), (13, 1553643), (21, 961779), (39, 517881), (49, 412191), (63, 320593), (91, 221949), (117, 172627), (147, 137397), (169, 119511), (271, 74529), (273, 73983), (441, 45799), (507, 39837), (637, 31707), (813, 24843), (819, 24661), (1183, 17073), (1521, 13279), (1897, 10647), (1911, 10569), (2439, 8281), (3523, 5733), (3549, 5691)]