21071661

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 32363520

約数和(自身を除く): 11291859

約数列:

[1, 3, 13, 29, 31, 39, 87, 93, 377, 403, 601, 899, 1131, 1209, 1803, 2697, 7813, 11687, 17429, 18631, 23439, 35061, 52287, 55893, 226577, 242203, 540299, 679731, 726609, 1620897, 7023887, 21071661]

約数ペア:

[(1, 21071661), (3, 7023887), (13, 1620897), (29, 726609), (31, 679731), (39, 540299), (87, 242203), (93, 226577), (377, 55893), (403, 52287), (601, 35061), (899, 23439), (1131, 18631), (1209, 17429), (1803, 11687), (2697, 7813)]