420804976

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{641471}}^1$

素因数の和:641520

約数の個数: 20

約数和(自身を含む): 835196544

約数和(自身を除く): 414391568

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 641471, 1282942, 2565884, 5131768, 10263536, 26300311, 52600622, 105201244, 210402488, 420804976]

約数ペア:

[(1, 420804976), (2, 210402488), (4, 105201244), (8, 52600622), (16, 26300311), (41, 10263536), (82, 5131768), (164, 2565884), (328, 1282942), (656, 641471)]