20263520

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1423}}^1$

素因数の和:1527

約数の個数: 48

約数和(自身を含む): 48444480

約数和(自身を除く): 28180960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1423, 1424, 1780, 2846, 2848, 3560, 5692, 7115, 7120, 11384, 14230, 14240, 22768, 28460, 45536, 56920, 113840, 126647, 227680, 253294, 506588, 633235, 1013176, 1266470, 2026352, 2532940, 4052704, 5065880, 10131760, 20263520]

約数ペア:

[(1, 20263520), (2, 10131760), (4, 5065880), (5, 4052704), (8, 2532940), (10, 2026352), (16, 1266470), (20, 1013176), (32, 633235), (40, 506588), (80, 253294), (89, 227680), (160, 126647), (178, 113840), (356, 56920), (445, 45536), (712, 28460), (890, 22768), (1423, 14240), (1424, 14230), (1780, 11384), (2846, 7120), (2848, 7115), (3560, 5692)]