21621720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{180181}}^1$

素因数の和:180195

約数の個数: 32

約数和(自身を含む): 64865520

約数和(自身を除く): 43243800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 180181, 360362, 540543, 720724, 900905, 1081086, 1441448, 1801810, 2162172, 2702715, 3603620, 4324344, 5405430, 7207240, 10810860, 21621720]

約数ペア:

[(1, 21621720), (2, 10810860), (3, 7207240), (4, 5405430), (5, 4324344), (6, 3603620), (8, 2702715), (10, 2162172), (12, 1801810), (15, 1441448), (20, 1081086), (24, 900905), (30, 720724), (40, 540543), (60, 360362), (120, 180181)]