20501855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{853}}^1$

素因数の和:911

約数の個数: 32

約数和(自身を含む): 29514240

約数和(自身を除く): 9012385

約数列:

[1, 5, 11, 19, 23, 55, 95, 115, 209, 253, 437, 853, 1045, 1265, 2185, 4265, 4807, 9383, 16207, 19619, 24035, 46915, 81035, 98095, 178277, 215809, 372761, 891385, 1079045, 1863805, 4100371, 20501855]

約数ペア:

[(1, 20501855), (5, 4100371), (11, 1863805), (19, 1079045), (23, 891385), (55, 372761), (95, 215809), (115, 178277), (209, 98095), (253, 81035), (437, 46915), (853, 24035), (1045, 19619), (1265, 16207), (2185, 9383), (4265, 4807)]