21647960

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14627}}^1$

素因数の和:14675

約数の個数: 32

約数和(自身を含む): 50027760

約数和(自身を除く): 28379800

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14627, 29254, 58508, 73135, 117016, 146270, 292540, 541199, 585080, 1082398, 2164796, 2705995, 4329592, 5411990, 10823980, 21647960]

約数ペア:

[(1, 21647960), (2, 10823980), (4, 5411990), (5, 4329592), (8, 2705995), (10, 2164796), (20, 1082398), (37, 585080), (40, 541199), (74, 292540), (148, 146270), (185, 117016), (296, 73135), (370, 58508), (740, 29254), (1480, 14627)]