40900780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1609}}^1$

素因数の和:1690

約数の個数: 48

約数和(自身を含む): 90881280

約数和(自身を除く): 49980500

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 1271, 1609, 2542, 3218, 5084, 6355, 6436, 8045, 12710, 16090, 25420, 32180, 49879, 65969, 99758, 131938, 199516, 249395, 263876, 329845, 498790, 659690, 997580, 1319380, 2045039, 4090078, 8180156, 10225195, 20450390, 40900780]

約数ペア:

[(1, 40900780), (2, 20450390), (4, 10225195), (5, 8180156), (10, 4090078), (20, 2045039), (31, 1319380), (41, 997580), (62, 659690), (82, 498790), (124, 329845), (155, 263876), (164, 249395), (205, 199516), (310, 131938), (410, 99758), (620, 65969), (820, 49879), (1271, 32180), (1609, 25420), (2542, 16090), (3218, 12710), (5084, 8045), (6355, 6436)]