8456220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 25945920

約数和(自身を除く): 17489700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 431, 436, 545, 654, 862, 981, 1090, 1293, 1308, 1635, 1724, 1962, 2155, 2180, 2586, 3270, 3879, 3924, 4310, 4905, 5172, 6465, 6540, 7758, 8620, 9810, 12930, 15516, 19395, 19620, 25860, 38790, 46979, 77580, 93958, 140937, 187916, 234895, 281874, 422811, 469790, 563748, 704685, 845622, 939580, 1409370, 1691244, 2114055, 2818740, 4228110, 8456220]

約数ペア:

[(1, 8456220), (2, 4228110), (3, 2818740), (4, 2114055), (5, 1691244), (6, 1409370), (9, 939580), (10, 845622), (12, 704685), (15, 563748), (18, 469790), (20, 422811), (30, 281874), (36, 234895), (45, 187916), (60, 140937), (90, 93958), (109, 77580), (180, 46979), (218, 38790), (327, 25860), (431, 19620), (436, 19395), (545, 15516), (654, 12930), (862, 9810), (981, 8620), (1090, 7758), (1293, 6540), (1308, 6465), (1635, 5172), (1724, 4905), (1962, 4310), (2155, 3924), (2180, 3879), (2586, 3270)]