80556980

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11743}}^1$

素因数の和:11773

約数の個数: 48

約数和(自身を含む): 197299200

約数和(自身を除く): 116742220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 11743, 23486, 46972, 58715, 82201, 117430, 164402, 234860, 328804, 411005, 575407, 822010, 1150814, 1644020, 2301628, 2877035, 4027849, 5754070, 8055698, 11508140, 16111396, 20139245, 40278490, 80556980]

約数ペア:

[(1, 80556980), (2, 40278490), (4, 20139245), (5, 16111396), (7, 11508140), (10, 8055698), (14, 5754070), (20, 4027849), (28, 2877035), (35, 2301628), (49, 1644020), (70, 1150814), (98, 822010), (140, 575407), (196, 411005), (245, 328804), (343, 234860), (490, 164402), (686, 117430), (980, 82201), (1372, 58715), (1715, 46972), (3430, 23486), (6860, 11743)]