391000075

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{557}}^1\times {\mathrm{653}}^1$

素因数の和:1263

約数の個数: 24

約数和(自身を含む): 497767248

約数和(自身を除く): 106767173

約数列:

[1, 5, 25, 43, 215, 557, 653, 1075, 2785, 3265, 13925, 16325, 23951, 28079, 119755, 140395, 363721, 598775, 701975, 1818605, 9093025, 15640003, 78200015, 391000075]

約数ペア:

[(1, 391000075), (5, 78200015), (25, 15640003), (43, 9093025), (215, 1818605), (557, 701975), (653, 598775), (1075, 363721), (2785, 140395), (3265, 119755), (13925, 28079), (16325, 23951)]