2898220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 6689088

約数和(自身を除く): 3790868

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 157, 260, 284, 314, 355, 628, 710, 785, 923, 1420, 1570, 1846, 2041, 3140, 3692, 4082, 4615, 8164, 9230, 10205, 11147, 18460, 20410, 22294, 40820, 44588, 55735, 111470, 144911, 222940, 289822, 579644, 724555, 1449110, 2898220]

約数ペア:

[(1, 2898220), (2, 1449110), (4, 724555), (5, 579644), (10, 289822), (13, 222940), (20, 144911), (26, 111470), (52, 55735), (65, 44588), (71, 40820), (130, 22294), (142, 20410), (157, 18460), (260, 11147), (284, 10205), (314, 9230), (355, 8164), (628, 4615), (710, 4082), (785, 3692), (923, 3140), (1420, 2041), (1570, 1846)]