28388556

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{12517}}^1$

素因数の和:12540

約数の個数: 60

約数和(自身を含む): 84821968

約数和(自身を除く): 56433412

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 252, 324, 378, 567, 756, 1134, 2268, 12517, 25034, 37551, 50068, 75102, 87619, 112653, 150204, 175238, 225306, 262857, 337959, 350476, 450612, 525714, 675918, 788571, 1013877, 1051428, 1351836, 1577142, 2027754, 2365713, 3154284, 4055508, 4731426, 7097139, 9462852, 14194278, 28388556]

約数ペア:

[(1, 28388556), (2, 14194278), (3, 9462852), (4, 7097139), (6, 4731426), (7, 4055508), (9, 3154284), (12, 2365713), (14, 2027754), (18, 1577142), (21, 1351836), (27, 1051428), (28, 1013877), (36, 788571), (42, 675918), (54, 525714), (63, 450612), (81, 350476), (84, 337959), (108, 262857), (126, 225306), (162, 175238), (189, 150204), (252, 112653), (324, 87619), (378, 75102), (567, 50068), (756, 37551), (1134, 25034), (2268, 12517)]