18012080

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3691}}^1$

素因数の和:3765

約数の個数: 40

約数和(自身を含む): 42576144

約数和(自身を除く): 24564064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3691, 4880, 7382, 14764, 18455, 29528, 36910, 59056, 73820, 147640, 225151, 295280, 450302, 900604, 1125755, 1801208, 2251510, 3602416, 4503020, 9006040, 18012080]

約数ペア:

[(1, 18012080), (2, 9006040), (4, 4503020), (5, 3602416), (8, 2251510), (10, 1801208), (16, 1125755), (20, 900604), (40, 450302), (61, 295280), (80, 225151), (122, 147640), (244, 73820), (305, 59056), (488, 36910), (610, 29528), (976, 18455), (1220, 14764), (2440, 7382), (3691, 4880)]