20126492080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{261791}}^1$

素因数の和:261866

約数の個数: 60

約数和(自身を含む): 48352458816

約数和(自身を除く): 28225966736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 961, 1240, 1922, 2480, 3844, 4805, 7688, 9610, 15376, 19220, 38440, 76880, 261791, 523582, 1047164, 1308955, 2094328, 2617910, 4188656, 5235820, 8115521, 10471640, 16231042, 20943280, 32462084, 40577605, 64924168, 81155210, 129848336, 162310420, 251581151, 324620840, 503162302, 649241680, 1006324604, 1257905755, 2012649208, 2515811510, 4025298416, 5031623020, 10063246040, 20126492080]

約数ペア:

[(1, 20126492080), (2, 10063246040), (4, 5031623020), (5, 4025298416), (8, 2515811510), (10, 2012649208), (16, 1257905755), (20, 1006324604), (31, 649241680), (40, 503162302), (62, 324620840), (80, 251581151), (124, 162310420), (155, 129848336), (248, 81155210), (310, 64924168), (496, 40577605), (620, 32462084), (961, 20943280), (1240, 16231042), (1922, 10471640), (2480, 8115521), (3844, 5235820), (4805, 4188656), (7688, 2617910), (9610, 2094328), (15376, 1308955), (19220, 1047164), (38440, 523582), (76880, 261791)]