21577736

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{521}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 42094080

約数和(自身を除く): 20516344

約数列:

[1, 2, 4, 8, 31, 62, 124, 167, 248, 334, 521, 668, 1042, 1336, 2084, 4168, 5177, 10354, 16151, 20708, 32302, 41416, 64604, 87007, 129208, 174014, 348028, 696056, 2697217, 5394434, 10788868, 21577736]

約数ペア:

[(1, 21577736), (2, 10788868), (4, 5394434), (8, 2697217), (31, 696056), (62, 348028), (124, 174014), (167, 129208), (248, 87007), (334, 64604), (521, 41416), (668, 32302), (1042, 20708), (1336, 16151), (2084, 10354), (4168, 5177)]