79801990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{1289}}^1$

素因数の和:1488

約数の個数: 32

約数和(自身を含む): 148236480

約数和(自身を除く): 68434490

約数列:

[1, 2, 5, 10, 41, 82, 151, 205, 302, 410, 755, 1289, 1510, 2578, 6191, 6445, 12382, 12890, 30955, 52849, 61910, 105698, 194639, 264245, 389278, 528490, 973195, 1946390, 7980199, 15960398, 39900995, 79801990]

約数ペア:

[(1, 79801990), (2, 39900995), (5, 15960398), (10, 7980199), (41, 1946390), (82, 973195), (151, 528490), (205, 389278), (302, 264245), (410, 194639), (755, 105698), (1289, 61910), (1510, 52849), (2578, 30955), (6191, 12890), (6445, 12382)]