21397624

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{33857}}^1$

素因数の和:33942

約数の個数: 16

約数和(自身を含む): 40629600

約数和(自身を除く): 19231976

約数列:

[1, 2, 4, 8, 79, 158, 316, 632, 33857, 67714, 135428, 270856, 2674703, 5349406, 10698812, 21397624]

約数ペア:

[(1, 21397624), (2, 10698812), (4, 5349406), (8, 2674703), (79, 270856), (158, 135428), (316, 67714), (632, 33857)]