18000520

素因数分解:

$2^3\times 5^1\times {\mathrm{619}}^1\times {\mathrm{727}}^1$

素因数の和:1357

約数の個数: 32

約数和(自身を含む): 40622400

約数和(自身を除く): 22621880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 619, 727, 1238, 1454, 2476, 2908, 3095, 3635, 4952, 5816, 6190, 7270, 12380, 14540, 24760, 29080, 450013, 900026, 1800052, 2250065, 3600104, 4500130, 9000260, 18000520]

約数ペア:

[(1, 18000520), (2, 9000260), (4, 4500130), (5, 3600104), (8, 2250065), (10, 1800052), (20, 900026), (40, 450013), (619, 29080), (727, 24760), (1238, 14540), (1454, 12380), (2476, 7270), (2908, 6190), (3095, 5816), (3635, 4952)]