81520885

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{6317}}^1$

素因数の和:6440

約数の個数: 16

約数和(自身を含む): 102351600

約数和(自身を除く): 20830715

約数列:

[1, 5, 29, 89, 145, 445, 2581, 6317, 12905, 31585, 183193, 562213, 915965, 2811065, 16304177, 81520885]

約数ペア:

[(1, 81520885), (5, 16304177), (29, 2811065), (89, 915965), (145, 562213), (445, 183193), (2581, 31585), (6317, 12905)]