20937015

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{613}}^1$

素因数の和:661

約数の個数: 64

約数和(自身を含む): 42439680

約数和(自身を除く): 21502665

約数列:

[1, 3, 5, 9, 11, 15, 23, 27, 33, 45, 55, 69, 99, 115, 135, 165, 207, 253, 297, 345, 495, 613, 621, 759, 1035, 1265, 1485, 1839, 2277, 3065, 3105, 3795, 5517, 6743, 6831, 9195, 11385, 14099, 16551, 20229, 27585, 33715, 34155, 42297, 60687, 70495, 82755, 101145, 126891, 155089, 182061, 211485, 303435, 380673, 465267, 634455, 775445, 910305, 1395801, 1903365, 2326335, 4187403, 6979005, 20937015]

約数ペア:

[(1, 20937015), (3, 6979005), (5, 4187403), (9, 2326335), (11, 1903365), (15, 1395801), (23, 910305), (27, 775445), (33, 634455), (45, 465267), (55, 380673), (69, 303435), (99, 211485), (115, 182061), (135, 155089), (165, 126891), (207, 101145), (253, 82755), (297, 70495), (345, 60687), (495, 42297), (613, 34155), (621, 33715), (759, 27585), (1035, 20229), (1265, 16551), (1485, 14099), (1839, 11385), (2277, 9195), (3065, 6831), (3105, 6743), (3795, 5517)]