20565191008

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{91691}}^1$

素因数の和:91907

約数の個数: 48

約数和(自身を含む): 41683916736

約数和(自身を除く): 21118725728

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 163, 172, 326, 344, 652, 688, 1304, 1376, 2608, 5216, 7009, 14018, 28036, 56072, 91691, 112144, 183382, 224288, 366764, 733528, 1467056, 2934112, 3942713, 7885426, 14945633, 15770852, 29891266, 31541704, 59782532, 63083408, 119565064, 126166816, 239130128, 478260256, 642662219, 1285324438, 2570648876, 5141297752, 10282595504, 20565191008]

約数ペア:

[(1, 20565191008), (2, 10282595504), (4, 5141297752), (8, 2570648876), (16, 1285324438), (32, 642662219), (43, 478260256), (86, 239130128), (163, 126166816), (172, 119565064), (326, 63083408), (344, 59782532), (652, 31541704), (688, 29891266), (1304, 15770852), (1376, 14945633), (2608, 7885426), (5216, 3942713), (7009, 2934112), (14018, 1467056), (28036, 733528), (56072, 366764), (91691, 224288), (112144, 183382)]