20025080

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 47541600

約数和(自身を除く): 27516520

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 61, 116, 122, 145, 232, 244, 283, 290, 305, 488, 566, 580, 610, 1132, 1160, 1220, 1415, 1769, 2264, 2440, 2830, 3538, 5660, 7076, 8207, 8845, 11320, 14152, 16414, 17263, 17690, 32828, 34526, 35380, 41035, 65656, 69052, 70760, 82070, 86315, 138104, 164140, 172630, 328280, 345260, 500627, 690520, 1001254, 2002508, 2503135, 4005016, 5006270, 10012540, 20025080]

約数ペア:

[(1, 20025080), (2, 10012540), (4, 5006270), (5, 4005016), (8, 2503135), (10, 2002508), (20, 1001254), (29, 690520), (40, 500627), (58, 345260), (61, 328280), (116, 172630), (122, 164140), (145, 138104), (232, 86315), (244, 82070), (283, 70760), (290, 69052), (305, 65656), (488, 41035), (566, 35380), (580, 34526), (610, 32828), (1132, 17690), (1160, 17263), (1220, 16414), (1415, 14152), (1769, 11320), (2264, 8845), (2440, 8207), (2830, 7076), (3538, 5660)]