21544240

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3793}}^1$

素因数の和:3877

約数の個数: 40

約数和(自身を含む): 50809248

約数和(自身を除く): 29265008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3793, 5680, 7586, 15172, 18965, 30344, 37930, 60688, 75860, 151720, 269303, 303440, 538606, 1077212, 1346515, 2154424, 2693030, 4308848, 5386060, 10772120, 21544240]

約数ペア:

[(1, 21544240), (2, 10772120), (4, 5386060), (5, 4308848), (8, 2693030), (10, 2154424), (16, 1346515), (20, 1077212), (40, 538606), (71, 303440), (80, 269303), (142, 151720), (284, 75860), (355, 60688), (568, 37930), (710, 30344), (1136, 18965), (1420, 15172), (2840, 7586), (3793, 5680)]