20341580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 52039680

約数和(自身を除く): 31698100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 43, 62, 70, 86, 109, 124, 140, 155, 172, 215, 217, 218, 301, 310, 430, 434, 436, 545, 602, 620, 763, 860, 868, 1085, 1090, 1204, 1333, 1505, 1526, 2170, 2180, 2666, 3010, 3052, 3379, 3815, 4340, 4687, 5332, 6020, 6665, 6758, 7630, 9331, 9374, 13330, 13516, 15260, 16895, 18662, 18748, 23435, 23653, 26660, 32809, 33790, 37324, 46655, 46870, 47306, 65618, 67580, 93310, 93740, 94612, 118265, 131236, 145297, 164045, 186620, 236530, 290594, 328090, 473060, 581188, 656180, 726485, 1017079, 1452970, 2034158, 2905940, 4068316, 5085395, 10170790, 20341580]

約数ペア:

[(1, 20341580), (2, 10170790), (4, 5085395), (5, 4068316), (7, 2905940), (10, 2034158), (14, 1452970), (20, 1017079), (28, 726485), (31, 656180), (35, 581188), (43, 473060), (62, 328090), (70, 290594), (86, 236530), (109, 186620), (124, 164045), (140, 145297), (155, 131236), (172, 118265), (215, 94612), (217, 93740), (218, 93310), (301, 67580), (310, 65618), (430, 47306), (434, 46870), (436, 46655), (545, 37324), (602, 33790), (620, 32809), (763, 26660), (860, 23653), (868, 23435), (1085, 18748), (1090, 18662), (1204, 16895), (1333, 15260), (1505, 13516), (1526, 13330), (2170, 9374), (2180, 9331), (2666, 7630), (3010, 6758), (3052, 6665), (3379, 6020), (3815, 5332), (4340, 4687)]