128425215

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{2371}}^1$

素因数の和:2559

約数の個数: 32

約数和(自身を含む): 215870976

約数和(自身を除く): 87445761

約数列:

[1, 3, 5, 15, 23, 69, 115, 157, 345, 471, 785, 2355, 2371, 3611, 7113, 10833, 11855, 18055, 35565, 54165, 54533, 163599, 272665, 372247, 817995, 1116741, 1861235, 5583705, 8561681, 25685043, 42808405, 128425215]

約数ペア:

[(1, 128425215), (3, 42808405), (5, 25685043), (15, 8561681), (23, 5583705), (69, 1861235), (115, 1116741), (157, 817995), (345, 372247), (471, 272665), (785, 163599), (2355, 54533), (2371, 54165), (3611, 35565), (7113, 18055), (10833, 11855)]