20178109

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{421}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 23821056

約数和(自身を除く): 3642947

約数列:

[1, 7, 41, 167, 287, 421, 1169, 2947, 6847, 17261, 47929, 70307, 120827, 492149, 2882587, 20178109]

約数ペア:

[(1, 20178109), (7, 2882587), (41, 492149), (167, 120827), (287, 70307), (421, 47929), (1169, 17261), (2947, 6847)]