20884020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2657}}^1$

素因数の和:2800

約数の個数: 48

約数和(自身を含む): 58943808

約数和(自身を除く): 38059788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 131, 262, 393, 524, 655, 786, 1310, 1572, 1965, 2620, 2657, 3930, 5314, 7860, 7971, 10628, 13285, 15942, 26570, 31884, 39855, 53140, 79710, 159420, 348067, 696134, 1044201, 1392268, 1740335, 2088402, 3480670, 4176804, 5221005, 6961340, 10442010, 20884020]

約数ペア:

[(1, 20884020), (2, 10442010), (3, 6961340), (4, 5221005), (5, 4176804), (6, 3480670), (10, 2088402), (12, 1740335), (15, 1392268), (20, 1044201), (30, 696134), (60, 348067), (131, 159420), (262, 79710), (393, 53140), (524, 39855), (655, 31884), (786, 26570), (1310, 15942), (1572, 13285), (1965, 10628), (2620, 7971), (2657, 7860), (3930, 5314)]