21968660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{773}}^1$

素因数の和:825

約数の個数: 72

約数和(自身を含む): 55588680

約数和(自身を除く): 33620020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 490, 580, 773, 812, 980, 1015, 1421, 1546, 2030, 2842, 3092, 3865, 4060, 5411, 5684, 7105, 7730, 10822, 14210, 15460, 21644, 22417, 27055, 28420, 37877, 44834, 54110, 75754, 89668, 108220, 112085, 151508, 156919, 189385, 224170, 313838, 378770, 448340, 627676, 757540, 784595, 1098433, 1569190, 2196866, 3138380, 4393732, 5492165, 10984330, 21968660]

約数ペア:

[(1, 21968660), (2, 10984330), (4, 5492165), (5, 4393732), (7, 3138380), (10, 2196866), (14, 1569190), (20, 1098433), (28, 784595), (29, 757540), (35, 627676), (49, 448340), (58, 378770), (70, 313838), (98, 224170), (116, 189385), (140, 156919), (145, 151508), (196, 112085), (203, 108220), (245, 89668), (290, 75754), (406, 54110), (490, 44834), (580, 37877), (773, 28420), (812, 27055), (980, 22417), (1015, 21644), (1421, 15460), (1546, 14210), (2030, 10822), (2842, 7730), (3092, 7105), (3865, 5684), (4060, 5411)]