21999776

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:525

約数の個数: 48

約数和(自身を含む): 45940608

約数和(自身を除く): 23940832

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 71, 92, 142, 184, 284, 368, 421, 568, 736, 842, 1136, 1633, 1684, 2272, 3266, 3368, 6532, 6736, 9683, 13064, 13472, 19366, 26128, 29891, 38732, 52256, 59782, 77464, 119564, 154928, 239128, 309856, 478256, 687493, 956512, 1374986, 2749972, 5499944, 10999888, 21999776]

約数ペア:

[(1, 21999776), (2, 10999888), (4, 5499944), (8, 2749972), (16, 1374986), (23, 956512), (32, 687493), (46, 478256), (71, 309856), (92, 239128), (142, 154928), (184, 119564), (284, 77464), (368, 59782), (421, 52256), (568, 38732), (736, 29891), (842, 26128), (1136, 19366), (1633, 13472), (1684, 13064), (2272, 9683), (3266, 6736), (3368, 6532)]