15813520

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2221}}^1$

素因数の和:2323

約数の個数: 40

約数和(自身を含む): 37196280

約数和(自身を除く): 21382760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 2221, 3560, 4442, 7120, 8884, 11105, 17768, 22210, 35536, 44420, 88840, 177680, 197669, 395338, 790676, 988345, 1581352, 1976690, 3162704, 3953380, 7906760, 15813520]

約数ペア:

[(1, 15813520), (2, 7906760), (4, 3953380), (5, 3162704), (8, 1976690), (10, 1581352), (16, 988345), (20, 790676), (40, 395338), (80, 197669), (89, 177680), (178, 88840), (356, 44420), (445, 35536), (712, 22210), (890, 17768), (1424, 11105), (1780, 8884), (2221, 7120), (3560, 4442)]