199972474

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{18269}}^1$

素因数の和:18705

約数の個数: 16

約数和(自身を含む): 323817480

約数和(自身を除く): 123845006

約数列:

[1, 2, 13, 26, 421, 842, 5473, 10946, 18269, 36538, 237497, 474994, 7691249, 15382498, 99986237, 199972474]

約数ペア:

[(1, 199972474), (2, 99986237), (13, 15382498), (26, 7691249), (421, 474994), (842, 237497), (5473, 36538), (10946, 18269)]