20816928

素因数分解:

$2^5\times 3^2\times {\mathrm{11}}^1\times {\mathrm{6571}}^1$

素因数の和:6598

約数の個数: 72

約数和(自身を含む): 64589616

約数和(自身を除く): 43772688

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 32, 33, 36, 44, 48, 66, 72, 88, 96, 99, 132, 144, 176, 198, 264, 288, 352, 396, 528, 792, 1056, 1584, 3168, 6571, 13142, 19713, 26284, 39426, 52568, 59139, 72281, 78852, 105136, 118278, 144562, 157704, 210272, 216843, 236556, 289124, 315408, 433686, 473112, 578248, 630816, 650529, 867372, 946224, 1156496, 1301058, 1734744, 1892448, 2312992, 2602116, 3469488, 5204232, 6938976, 10408464, 20816928]

約数ペア:

[(1, 20816928), (2, 10408464), (3, 6938976), (4, 5204232), (6, 3469488), (8, 2602116), (9, 2312992), (11, 1892448), (12, 1734744), (16, 1301058), (18, 1156496), (22, 946224), (24, 867372), (32, 650529), (33, 630816), (36, 578248), (44, 473112), (48, 433686), (66, 315408), (72, 289124), (88, 236556), (96, 216843), (99, 210272), (132, 157704), (144, 144562), (176, 118278), (198, 105136), (264, 78852), (288, 72281), (352, 59139), (396, 52568), (528, 39426), (792, 26284), (1056, 19713), (1584, 13142), (3168, 6571)]