409083560

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{5147}}^1$

素因数の和:7145

約数の個数: 32

約数和(自身を含む): 921080160

約数和(自身を除く): 511996600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 5147, 7948, 9935, 10294, 15896, 19870, 20588, 25735, 39740, 41176, 51470, 79480, 102940, 205880, 10227089, 20454178, 40908356, 51135445, 81816712, 102270890, 204541780, 409083560]

約数ペア:

[(1, 409083560), (2, 204541780), (4, 102270890), (5, 81816712), (8, 51135445), (10, 40908356), (20, 20454178), (40, 10227089), (1987, 205880), (3974, 102940), (5147, 79480), (7948, 51470), (9935, 41176), (10294, 39740), (15896, 25735), (19870, 20588)]