1981460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7621}}^1$

素因数の和:7643

約数の個数: 24

約数和(自身を含む): 4481736

約数和(自身を除く): 2500276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 7621, 15242, 30484, 38105, 76210, 99073, 152420, 198146, 396292, 495365, 990730, 1981460]

約数ペア:

[(1, 1981460), (2, 990730), (4, 495365), (5, 396292), (10, 198146), (13, 152420), (20, 99073), (26, 76210), (52, 38105), (65, 30484), (130, 15242), (260, 7621)]