20622160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:356

約数の個数: 80

約数和(自身を含む): 52496640

約数和(自身を除く): 31874480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 158, 208, 251, 260, 316, 395, 502, 520, 632, 790, 1004, 1027, 1040, 1255, 1264, 1580, 2008, 2054, 2510, 3160, 3263, 4016, 4108, 5020, 5135, 6320, 6526, 8216, 10040, 10270, 13052, 16315, 16432, 19829, 20080, 20540, 26104, 32630, 39658, 41080, 52208, 65260, 79316, 82160, 99145, 130520, 158632, 198290, 257777, 261040, 317264, 396580, 515554, 793160, 1031108, 1288885, 1586320, 2062216, 2577770, 4124432, 5155540, 10311080, 20622160]

約数ペア:

[(1, 20622160), (2, 10311080), (4, 5155540), (5, 4124432), (8, 2577770), (10, 2062216), (13, 1586320), (16, 1288885), (20, 1031108), (26, 793160), (40, 515554), (52, 396580), (65, 317264), (79, 261040), (80, 257777), (104, 198290), (130, 158632), (158, 130520), (208, 99145), (251, 82160), (260, 79316), (316, 65260), (395, 52208), (502, 41080), (520, 39658), (632, 32630), (790, 26104), (1004, 20540), (1027, 20080), (1040, 19829), (1255, 16432), (1264, 16315), (1580, 13052), (2008, 10270), (2054, 10040), (2510, 8216), (3160, 6526), (3263, 6320), (4016, 5135), (4108, 5020)]