21168992

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{337}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 45313632

約数和(自身を除く): 24144640

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 151, 208, 302, 337, 416, 604, 674, 1208, 1348, 1963, 2416, 2696, 3926, 4381, 4832, 5392, 7852, 8762, 10784, 15704, 17524, 31408, 35048, 50887, 62816, 70096, 101774, 140192, 203548, 407096, 661531, 814192, 1323062, 1628384, 2646124, 5292248, 10584496, 21168992]

約数ペア:

[(1, 21168992), (2, 10584496), (4, 5292248), (8, 2646124), (13, 1628384), (16, 1323062), (26, 814192), (32, 661531), (52, 407096), (104, 203548), (151, 140192), (208, 101774), (302, 70096), (337, 62816), (416, 50887), (604, 35048), (674, 31408), (1208, 17524), (1348, 15704), (1963, 10784), (2416, 8762), (2696, 7852), (3926, 5392), (4381, 4832)]