28255290

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{857}}^1$

素因数の和:1031

約数の個数: 64

約数和(自身を含む): 78084864

約数和(自身を除く): 49829574

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 157, 210, 314, 471, 785, 857, 942, 1099, 1570, 1714, 2198, 2355, 2571, 3297, 4285, 4710, 5142, 5495, 5999, 6594, 8570, 10990, 11998, 12855, 16485, 17997, 25710, 29995, 32970, 35994, 59990, 89985, 134549, 179970, 269098, 403647, 672745, 807294, 941843, 1345490, 1883686, 2018235, 2825529, 4036470, 4709215, 5651058, 9418430, 14127645, 28255290]

約数ペア:

[(1, 28255290), (2, 14127645), (3, 9418430), (5, 5651058), (6, 4709215), (7, 4036470), (10, 2825529), (14, 2018235), (15, 1883686), (21, 1345490), (30, 941843), (35, 807294), (42, 672745), (70, 403647), (105, 269098), (157, 179970), (210, 134549), (314, 89985), (471, 59990), (785, 35994), (857, 32970), (942, 29995), (1099, 25710), (1570, 17997), (1714, 16485), (2198, 12855), (2355, 11998), (2571, 10990), (3297, 8570), (4285, 6594), (4710, 5999), (5142, 5495)]