21036528

素因数分解:

$2^4\times 3^2\times {\mathrm{347}}^1\times {\mathrm{421}}^1$

素因数の和:782

約数の個数: 60

約数和(自身を含む): 59182968

約数和(自身を除く): 38146440

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 347, 421, 694, 842, 1041, 1263, 1388, 1684, 2082, 2526, 2776, 3123, 3368, 3789, 4164, 5052, 5552, 6246, 6736, 7578, 8328, 10104, 12492, 15156, 16656, 20208, 24984, 30312, 49968, 60624, 146087, 292174, 438261, 584348, 876522, 1168696, 1314783, 1753044, 2337392, 2629566, 3506088, 5259132, 7012176, 10518264, 21036528]

約数ペア:

[(1, 21036528), (2, 10518264), (3, 7012176), (4, 5259132), (6, 3506088), (8, 2629566), (9, 2337392), (12, 1753044), (16, 1314783), (18, 1168696), (24, 876522), (36, 584348), (48, 438261), (72, 292174), (144, 146087), (347, 60624), (421, 49968), (694, 30312), (842, 24984), (1041, 20208), (1263, 16656), (1388, 15156), (1684, 12492), (2082, 10104), (2526, 8328), (2776, 7578), (3123, 6736), (3368, 6246), (3789, 5552), (4164, 5052)]