400807988

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{463}}^1\times {\mathrm{719}}^1$

素因数の和:1236

約数の個数: 48

約数和(自身を含む): 823173120

約数和(自身を除く): 422365132

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 463, 602, 719, 926, 1204, 1438, 1852, 2876, 3241, 5033, 6482, 10066, 12964, 19909, 20132, 30917, 39818, 61834, 79636, 123668, 139363, 216419, 278726, 332897, 432838, 557452, 665794, 865676, 1331588, 2330279, 4660558, 9321116, 14314571, 28629142, 57258284, 100201997, 200403994, 400807988]

約数ペア:

[(1, 400807988), (2, 200403994), (4, 100201997), (7, 57258284), (14, 28629142), (28, 14314571), (43, 9321116), (86, 4660558), (172, 2330279), (301, 1331588), (463, 865676), (602, 665794), (719, 557452), (926, 432838), (1204, 332897), (1438, 278726), (1852, 216419), (2876, 139363), (3241, 123668), (5033, 79636), (6482, 61834), (10066, 39818), (12964, 30917), (19909, 20132)]