31878140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2089}}^1$

素因数の和:2214

約数の個数: 48

約数和(自身を含む): 77246400

約数和(自身を除く): 45368260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 2089, 2180, 3052, 3815, 4178, 7630, 8356, 10445, 14623, 15260, 20890, 29246, 41780, 58492, 73115, 146230, 227701, 292460, 455402, 910804, 1138505, 1593907, 2277010, 3187814, 4554020, 6375628, 7969535, 15939070, 31878140]

約数ペア:

[(1, 31878140), (2, 15939070), (4, 7969535), (5, 6375628), (7, 4554020), (10, 3187814), (14, 2277010), (20, 1593907), (28, 1138505), (35, 910804), (70, 455402), (109, 292460), (140, 227701), (218, 146230), (436, 73115), (545, 58492), (763, 41780), (1090, 29246), (1526, 20890), (2089, 15260), (2180, 14623), (3052, 10445), (3815, 8356), (4178, 7630)]