204422920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{393121}}^1$

素因数の和:393145

約数の個数: 32

約数和(自身を含む): 495333720

約数和(自身を除く): 290910800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 393121, 786242, 1572484, 1965605, 3144968, 3931210, 5110573, 7862420, 10221146, 15724840, 20442292, 25552865, 40884584, 51105730, 102211460, 204422920]

約数ペア:

[(1, 204422920), (2, 102211460), (4, 51105730), (5, 40884584), (8, 25552865), (10, 20442292), (13, 15724840), (20, 10221146), (26, 7862420), (40, 5110573), (52, 3931210), (65, 3144968), (104, 1965605), (130, 1572484), (260, 786242), (520, 393121)]