21677290

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{421}}^1$

素因数の和:718

約数の個数: 32

約数和(自身を含む): 41322240

約数和(自身を除く): 19644950

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 271, 421, 542, 842, 1355, 2105, 2710, 4210, 5149, 7999, 10298, 15998, 25745, 39995, 51490, 79990, 114091, 228182, 570455, 1140910, 2167729, 4335458, 10838645, 21677290]

約数ペア:

[(1, 21677290), (2, 10838645), (5, 4335458), (10, 2167729), (19, 1140910), (38, 570455), (95, 228182), (190, 114091), (271, 79990), (421, 51490), (542, 39995), (842, 25745), (1355, 15998), (2105, 10298), (2710, 7999), (4210, 5149)]