20825720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7333}}^1$

素因数の和:7415

約数の個数: 32

約数和(自身を含む): 47524320

約数和(自身を除く): 26698600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7333, 14666, 29332, 36665, 58664, 73330, 146660, 293320, 520643, 1041286, 2082572, 2603215, 4165144, 5206430, 10412860, 20825720]

約数ペア:

[(1, 20825720), (2, 10412860), (4, 5206430), (5, 4165144), (8, 2603215), (10, 2082572), (20, 1041286), (40, 520643), (71, 293320), (142, 146660), (284, 73330), (355, 58664), (568, 36665), (710, 29332), (1420, 14666), (2840, 7333)]