20450950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:529

約数の個数: 48

約数和(自身を含む): 41622336

約数和(自身を除く): 21171386

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 431, 650, 730, 862, 949, 1825, 1898, 2155, 3650, 4310, 4745, 5603, 9490, 10775, 11206, 21550, 23725, 28015, 31463, 47450, 56030, 62926, 140075, 157315, 280150, 314630, 409019, 786575, 818038, 1573150, 2045095, 4090190, 10225475, 20450950]

約数ペア:

[(1, 20450950), (2, 10225475), (5, 4090190), (10, 2045095), (13, 1573150), (25, 818038), (26, 786575), (50, 409019), (65, 314630), (73, 280150), (130, 157315), (146, 140075), (325, 62926), (365, 56030), (431, 47450), (650, 31463), (730, 28015), (862, 23725), (949, 21550), (1825, 11206), (1898, 10775), (2155, 9490), (3650, 5603), (4310, 4745)]