1989520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1913}}^1$

素因数の和:1939

約数の個数: 40

約数和(自身を含む): 4984056

約数和(自身を除く): 2994536

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1913, 3826, 7652, 9565, 15304, 19130, 24869, 30608, 38260, 49738, 76520, 99476, 124345, 153040, 198952, 248690, 397904, 497380, 994760, 1989520]

約数ペア:

[(1, 1989520), (2, 994760), (4, 497380), (5, 397904), (8, 248690), (10, 198952), (13, 153040), (16, 124345), (20, 99476), (26, 76520), (40, 49738), (52, 38260), (65, 30608), (80, 24869), (104, 19130), (130, 15304), (208, 9565), (260, 7652), (520, 3826), (1040, 1913)]