21328456

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{617}}^1$

素因数の和:801

約数の個数: 32

約数和(自身を含む): 41715000

約数和(自身を除く): 20386544

約数列:

[1, 2, 4, 8, 29, 58, 116, 149, 232, 298, 596, 617, 1192, 1234, 2468, 4321, 4936, 8642, 17284, 17893, 34568, 35786, 71572, 91933, 143144, 183866, 367732, 735464, 2666057, 5332114, 10664228, 21328456]

約数ペア:

[(1, 21328456), (2, 10664228), (4, 5332114), (8, 2666057), (29, 735464), (58, 367732), (116, 183866), (149, 143144), (232, 91933), (298, 71572), (596, 35786), (617, 34568), (1192, 17893), (1234, 17284), (2468, 8642), (4321, 4936)]