31990250

素因数分解:

$2^1\times 5^3\times {\mathrm{41}}^1\times {\mathrm{3121}}^1$

素因数の和:3179

約数の個数: 32

約数和(自身を含む): 61366032

約数和(自身を除く): 29375782

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 410, 1025, 2050, 3121, 5125, 6242, 10250, 15605, 31210, 78025, 127961, 156050, 255922, 390125, 639805, 780250, 1279610, 3199025, 6398050, 15995125, 31990250]

約数ペア:

[(1, 31990250), (2, 15995125), (5, 6398050), (10, 3199025), (25, 1279610), (41, 780250), (50, 639805), (82, 390125), (125, 255922), (205, 156050), (250, 127961), (410, 78025), (1025, 31210), (2050, 15605), (3121, 10250), (5125, 6242)]