20828556

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{27551}}^1$

素因数の和:27571

約数の個数: 48

約数和(自身を含む): 61716480

約数和(自身を除く): 40887924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 27551, 55102, 82653, 110204, 165306, 192857, 247959, 330612, 385714, 495918, 578571, 743877, 771428, 991836, 1157142, 1487754, 1735713, 2314284, 2975508, 3471426, 5207139, 6942852, 10414278, 20828556]

約数ペア:

[(1, 20828556), (2, 10414278), (3, 6942852), (4, 5207139), (6, 3471426), (7, 2975508), (9, 2314284), (12, 1735713), (14, 1487754), (18, 1157142), (21, 991836), (27, 771428), (28, 743877), (36, 578571), (42, 495918), (54, 385714), (63, 330612), (84, 247959), (108, 192857), (126, 165306), (189, 110204), (252, 82653), (378, 55102), (756, 27551)]