81660528

素因数分解:

$2^4\times 3^3\times {\mathrm{421}}^1\times {\mathrm{449}}^1$

素因数の和:887

約数の個数: 80

約数和(自身を含む): 235476000

約数和(自身を除く): 153815472

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, 421, 432, 449, 842, 898, 1263, 1347, 1684, 1796, 2526, 2694, 3368, 3592, 3789, 4041, 5052, 5388, 6736, 7184, 7578, 8082, 10104, 10776, 11367, 12123, 15156, 16164, 20208, 21552, 22734, 24246, 30312, 32328, 45468, 48492, 60624, 64656, 90936, 96984, 181872, 189029, 193968, 378058, 567087, 756116, 1134174, 1512232, 1701261, 2268348, 3024464, 3402522, 4536696, 5103783, 6805044, 9073392, 10207566, 13610088, 20415132, 27220176, 40830264, 81660528]

約数ペア:

[(1, 81660528), (2, 40830264), (3, 27220176), (4, 20415132), (6, 13610088), (8, 10207566), (9, 9073392), (12, 6805044), (16, 5103783), (18, 4536696), (24, 3402522), (27, 3024464), (36, 2268348), (48, 1701261), (54, 1512232), (72, 1134174), (108, 756116), (144, 567087), (216, 378058), (421, 193968), (432, 189029), (449, 181872), (842, 96984), (898, 90936), (1263, 64656), (1347, 60624), (1684, 48492), (1796, 45468), (2526, 32328), (2694, 30312), (3368, 24246), (3592, 22734), (3789, 21552), (4041, 20208), (5052, 16164), (5388, 15156), (6736, 12123), (7184, 11367), (7578, 10776), (8082, 10104)]