20553760

素因数分解:

$2^5\times 5^1\times {\mathrm{128461}}^1$

素因数の和:128476

約数の個数: 24

約数和(自身を含む): 48558636

約数和(自身を除く): 28004876

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128461, 256922, 513844, 642305, 1027688, 1284610, 2055376, 2569220, 4110752, 5138440, 10276880, 20553760]

約数ペア:

[(1, 20553760), (2, 10276880), (4, 5138440), (5, 4110752), (8, 2569220), (10, 2055376), (16, 1284610), (20, 1027688), (32, 642305), (40, 513844), (80, 256922), (160, 128461)]