21475376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^2$

素因数の和:178

約数の個数: 60

約数和(自身を含む): 47465712

約数和(自身を除く): 25990336

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 46, 52, 67, 92, 104, 134, 184, 208, 268, 299, 368, 536, 598, 871, 1072, 1196, 1541, 1742, 2392, 3082, 3484, 4489, 4784, 6164, 6968, 8978, 12328, 13936, 17956, 20033, 24656, 35912, 40066, 58357, 71824, 80132, 103247, 116714, 160264, 206494, 233428, 320528, 412988, 466856, 825976, 933712, 1342211, 1651952, 2684422, 5368844, 10737688, 21475376]

約数ペア:

[(1, 21475376), (2, 10737688), (4, 5368844), (8, 2684422), (13, 1651952), (16, 1342211), (23, 933712), (26, 825976), (46, 466856), (52, 412988), (67, 320528), (92, 233428), (104, 206494), (134, 160264), (184, 116714), (208, 103247), (268, 80132), (299, 71824), (368, 58357), (536, 40066), (598, 35912), (871, 24656), (1072, 20033), (1196, 17956), (1541, 13936), (1742, 12328), (2392, 8978), (3082, 6968), (3484, 6164), (4489, 4784)]