81721242

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{5557}}^1$

素因数の和:5627

約数の個数: 48

約数和(自身を含む): 190750560

約数和(自身を除く): 109029318

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 43, 57, 86, 114, 129, 171, 258, 342, 387, 774, 817, 1634, 2451, 4902, 5557, 7353, 11114, 14706, 16671, 33342, 50013, 100026, 105583, 211166, 238951, 316749, 477902, 633498, 716853, 950247, 1433706, 1900494, 2150559, 4301118, 4540069, 9080138, 13620207, 27240414, 40860621, 81721242]

約数ペア:

[(1, 81721242), (2, 40860621), (3, 27240414), (6, 13620207), (9, 9080138), (18, 4540069), (19, 4301118), (38, 2150559), (43, 1900494), (57, 1433706), (86, 950247), (114, 716853), (129, 633498), (171, 477902), (258, 316749), (342, 238951), (387, 211166), (774, 105583), (817, 100026), (1634, 50013), (2451, 33342), (4902, 16671), (5557, 14706), (7353, 11114)]