20731360

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9967}}^1$

素因数の和:9995

約数の個数: 48

約数和(自身を含む): 52750656

約数和(自身を除く): 32019296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9967, 19934, 39868, 49835, 79736, 99670, 129571, 159472, 199340, 259142, 318944, 398680, 518284, 647855, 797360, 1036568, 1295710, 1594720, 2073136, 2591420, 4146272, 5182840, 10365680, 20731360]

約数ペア:

[(1, 20731360), (2, 10365680), (4, 5182840), (5, 4146272), (8, 2591420), (10, 2073136), (13, 1594720), (16, 1295710), (20, 1036568), (26, 797360), (32, 647855), (40, 518284), (52, 398680), (65, 318944), (80, 259142), (104, 199340), (130, 159472), (160, 129571), (208, 99670), (260, 79736), (416, 49835), (520, 39868), (1040, 19934), (2080, 9967)]