12684580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 28224000

約数和(自身を除く): 15539420

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 499, 620, 820, 998, 1271, 1996, 2495, 2542, 4990, 5084, 6355, 9980, 12710, 15469, 20459, 25420, 30938, 40918, 61876, 77345, 81836, 102295, 154690, 204590, 309380, 409180, 634229, 1268458, 2536916, 3171145, 6342290, 12684580]

約数ペア:

[(1, 12684580), (2, 6342290), (4, 3171145), (5, 2536916), (10, 1268458), (20, 634229), (31, 409180), (41, 309380), (62, 204590), (82, 154690), (124, 102295), (155, 81836), (164, 77345), (205, 61876), (310, 40918), (410, 30938), (499, 25420), (620, 20459), (820, 15469), (998, 12710), (1271, 9980), (1996, 6355), (2495, 5084), (2542, 4990)]