18900100

素因数分解:

$2^2\times 5^2\times {\mathrm{331}}^1\times {\mathrm{571}}^1$

素因数の和:916

約数の個数: 36

約数和(自身を含む): 41209168

約数和(自身を除く): 22309068

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 331, 571, 662, 1142, 1324, 1655, 2284, 2855, 3310, 5710, 6620, 8275, 11420, 14275, 16550, 28550, 33100, 57100, 189001, 378002, 756004, 945005, 1890010, 3780020, 4725025, 9450050, 18900100]

約数ペア:

[(1, 18900100), (2, 9450050), (4, 4725025), (5, 3780020), (10, 1890010), (20, 945005), (25, 756004), (50, 378002), (100, 189001), (331, 57100), (571, 33100), (662, 28550), (1142, 16550), (1324, 14275), (1655, 11420), (2284, 8275), (2855, 6620), (3310, 5710)]