18005840

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1301}}^1$

素因数の和:1487

約数の個数: 40

約数和(自身を含む): 42137928

約数和(自身を除く): 24132088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1301, 1384, 1730, 2602, 2768, 3460, 5204, 6505, 6920, 10408, 13010, 13840, 20816, 26020, 52040, 104080, 225073, 450146, 900292, 1125365, 1800584, 2250730, 3601168, 4501460, 9002920, 18005840]

約数ペア:

[(1, 18005840), (2, 9002920), (4, 4501460), (5, 3601168), (8, 2250730), (10, 1800584), (16, 1125365), (20, 900292), (40, 450146), (80, 225073), (173, 104080), (346, 52040), (692, 26020), (865, 20816), (1301, 13840), (1384, 13010), (1730, 10408), (2602, 6920), (2768, 6505), (3460, 5204)]