31915660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1123}}^1$

素因数の和:1175

約数の個数: 72

約数和(自身を含む): 80725680

約数和(自身を除く): 48810020

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, 812, 980, 1015, 1123, 1421, 2030, 2246, 2842, 4060, 4492, 5615, 5684, 7105, 7861, 11230, 14210, 15722, 22460, 28420, 31444, 32567, 39305, 55027, 65134, 78610, 110054, 130268, 157220, 162835, 220108, 227969, 275135, 325670, 455938, 550270, 651340, 911876, 1100540, 1139845, 1595783, 2279690, 3191566, 4559380, 6383132, 7978915, 15957830, 31915660]

約数ペア:

[(1, 31915660), (2, 15957830), (4, 7978915), (5, 6383132), (7, 4559380), (10, 3191566), (14, 2279690), (20, 1595783), (28, 1139845), (29, 1100540), (35, 911876), (49, 651340), (58, 550270), (70, 455938), (98, 325670), (116, 275135), (140, 227969), (145, 220108), (196, 162835), (203, 157220), (245, 130268), (290, 110054), (406, 78610), (490, 65134), (580, 55027), (812, 39305), (980, 32567), (1015, 31444), (1123, 28420), (1421, 22460), (2030, 15722), (2246, 14210), (2842, 11230), (4060, 7861), (4492, 7105), (5615, 5684)]