21398692

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2539}}^1$

素因数の和:2600

約数の個数: 36

約数和(自身を含む): 44592240

約数和(自身を除く): 23193548

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 602, 1204, 2107, 2539, 4214, 5078, 8428, 10156, 17773, 35546, 71092, 109177, 124411, 218354, 248822, 436708, 497644, 764239, 1528478, 3056956, 5349673, 10699346, 21398692]

約数ペア:

[(1, 21398692), (2, 10699346), (4, 5349673), (7, 3056956), (14, 1528478), (28, 764239), (43, 497644), (49, 436708), (86, 248822), (98, 218354), (172, 124411), (196, 109177), (301, 71092), (602, 35546), (1204, 17773), (2107, 10156), (2539, 8428), (4214, 5078)]