68400840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{881}}^1$

素因数の和:1542

約数の個数: 64

約数和(自身を含む): 205752960

約数和(自身を除く): 137352120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 647, 881, 1294, 1762, 1941, 2588, 2643, 3235, 3524, 3882, 4405, 5176, 5286, 6470, 7048, 7764, 8810, 9705, 10572, 12940, 13215, 15528, 17620, 19410, 21144, 25880, 26430, 35240, 38820, 52860, 77640, 105720, 570007, 1140014, 1710021, 2280028, 2850035, 3420042, 4560056, 5700070, 6840084, 8550105, 11400140, 13680168, 17100210, 22800280, 34200420, 68400840]

約数ペア:

[(1, 68400840), (2, 34200420), (3, 22800280), (4, 17100210), (5, 13680168), (6, 11400140), (8, 8550105), (10, 6840084), (12, 5700070), (15, 4560056), (20, 3420042), (24, 2850035), (30, 2280028), (40, 1710021), (60, 1140014), (120, 570007), (647, 105720), (881, 77640), (1294, 52860), (1762, 38820), (1941, 35240), (2588, 26430), (2643, 25880), (3235, 21144), (3524, 19410), (3882, 17620), (4405, 15528), (5176, 13215), (5286, 12940), (6470, 10572), (7048, 9705), (7764, 8810)]