20664944

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:633

約数の個数: 40

約数和(自身を含む): 41814288

約数和(自身を除く): 21149344

約数列:

[1, 2, 4, 8, 16, 37, 67, 74, 134, 148, 268, 296, 521, 536, 592, 1042, 1072, 2084, 2479, 4168, 4958, 8336, 9916, 19277, 19832, 34907, 38554, 39664, 69814, 77108, 139628, 154216, 279256, 308432, 558512, 1291559, 2583118, 5166236, 10332472, 20664944]

約数ペア:

[(1, 20664944), (2, 10332472), (4, 5166236), (8, 2583118), (16, 1291559), (37, 558512), (67, 308432), (74, 279256), (134, 154216), (148, 139628), (268, 77108), (296, 69814), (521, 39664), (536, 38554), (592, 34907), (1042, 19832), (1072, 19277), (2084, 9916), (2479, 8336), (4168, 4958)]