890403700

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{823}}^1$

素因数の和:1217

約数の個数: 72

約数和(自身を含む): 2002649600

約数和(自身を除く): 1112245900

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 349, 620, 698, 775, 823, 1396, 1550, 1646, 1745, 3100, 3292, 3490, 4115, 6980, 8230, 8725, 10819, 16460, 17450, 20575, 21638, 25513, 34900, 41150, 43276, 51026, 54095, 82300, 102052, 108190, 127565, 216380, 255130, 270475, 287227, 510260, 540950, 574454, 637825, 1081900, 1148908, 1275650, 1436135, 2551300, 2872270, 5744540, 7180675, 8904037, 14361350, 17808074, 28722700, 35616148, 44520185, 89040370, 178080740, 222600925, 445201850, 890403700]

約数ペア:

[(1, 890403700), (2, 445201850), (4, 222600925), (5, 178080740), (10, 89040370), (20, 44520185), (25, 35616148), (31, 28722700), (50, 17808074), (62, 14361350), (100, 8904037), (124, 7180675), (155, 5744540), (310, 2872270), (349, 2551300), (620, 1436135), (698, 1275650), (775, 1148908), (823, 1081900), (1396, 637825), (1550, 574454), (1646, 540950), (1745, 510260), (3100, 287227), (3292, 270475), (3490, 255130), (4115, 216380), (6980, 127565), (8230, 108190), (8725, 102052), (10819, 82300), (16460, 54095), (17450, 51026), (20575, 43276), (21638, 41150), (25513, 34900)]