42921081

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{21977}}^1$

素因数の和:22021

約数の個数: 24

約数和(自身を含む): 73142784

約数和(自身を除く): 30221703

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 21977, 65931, 153839, 197793, 461517, 681287, 1384551, 2043861, 4769009, 6131583, 14307027, 42921081]

約数ペア:

[(1, 42921081), (3, 14307027), (7, 6131583), (9, 4769009), (21, 2043861), (31, 1384551), (63, 681287), (93, 461517), (217, 197793), (279, 153839), (651, 65931), (1953, 21977)]