21905849

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{601}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 25890816

約数和(自身を除く): 3984967

約数列:

[1, 7, 41, 127, 287, 601, 889, 4207, 5207, 24641, 36449, 76327, 172487, 534289, 3129407, 21905849]

約数ペア:

[(1, 21905849), (7, 3129407), (41, 534289), (127, 172487), (287, 76327), (601, 36449), (889, 24641), (4207, 5207)]