208686520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{811}}^1\times {\mathrm{919}}^1$

素因数の和:1748

約数の個数: 64

約数和(自身を含む): 537868800

約数和(自身を除く): 329182280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 811, 919, 1622, 1838, 3244, 3676, 4055, 4595, 5677, 6433, 6488, 7352, 8110, 9190, 11354, 12866, 16220, 18380, 22708, 25732, 28385, 32165, 32440, 36760, 45416, 51464, 56770, 64330, 113540, 128660, 227080, 257320, 745309, 1490618, 2981236, 3726545, 5217163, 5962472, 7453090, 10434326, 14906180, 20868652, 26085815, 29812360, 41737304, 52171630, 104343260, 208686520]

約数ペア:

[(1, 208686520), (2, 104343260), (4, 52171630), (5, 41737304), (7, 29812360), (8, 26085815), (10, 20868652), (14, 14906180), (20, 10434326), (28, 7453090), (35, 5962472), (40, 5217163), (56, 3726545), (70, 2981236), (140, 1490618), (280, 745309), (811, 257320), (919, 227080), (1622, 128660), (1838, 113540), (3244, 64330), (3676, 56770), (4055, 51464), (4595, 45416), (5677, 36760), (6433, 32440), (6488, 32165), (7352, 28385), (8110, 25732), (9190, 22708), (11354, 18380), (12866, 16220)]