42668380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23971}}^1$

素因数の和:24069

約数の個数: 24

約数和(自身を含む): 90614160

約数和(自身を除く): 47945780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 23971, 47942, 95884, 119855, 239710, 479420, 2133419, 4266838, 8533676, 10667095, 21334190, 42668380]

約数ペア:

[(1, 42668380), (2, 21334190), (4, 10667095), (5, 8533676), (10, 4266838), (20, 2133419), (89, 479420), (178, 239710), (356, 119855), (445, 95884), (890, 47942), (1780, 23971)]