28310750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 59125248

約数和(自身を除く): 30814498

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 125, 130, 155, 250, 281, 310, 325, 403, 562, 650, 775, 806, 1405, 1550, 1625, 2015, 2810, 3250, 3653, 3875, 4030, 7025, 7306, 7750, 8711, 10075, 14050, 17422, 18265, 20150, 35125, 36530, 43555, 50375, 70250, 87110, 91325, 100750, 113243, 182650, 217775, 226486, 435550, 456625, 566215, 913250, 1088875, 1132430, 2177750, 2831075, 5662150, 14155375, 28310750]

約数ペア:

[(1, 28310750), (2, 14155375), (5, 5662150), (10, 2831075), (13, 2177750), (25, 1132430), (26, 1088875), (31, 913250), (50, 566215), (62, 456625), (65, 435550), (125, 226486), (130, 217775), (155, 182650), (250, 113243), (281, 100750), (310, 91325), (325, 87110), (403, 70250), (562, 50375), (650, 43555), (775, 36530), (806, 35125), (1405, 20150), (1550, 18265), (1625, 17422), (2015, 14050), (2810, 10075), (3250, 8711), (3653, 7750), (3875, 7306), (4030, 7025)]