21000313325

素因数分解:

$5^2\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1\times {\mathrm{461}}^1$

素因数の和:882

約数の個数: 48

約数和(自身を含む): 26813648400

約数和(自身を除く): 5813335075

約数列:

[1, 5, 25, 73, 109, 229, 365, 461, 545, 1145, 1825, 2305, 2725, 5725, 7957, 11525, 16717, 24961, 33653, 39785, 50249, 83585, 105569, 124805, 168265, 198925, 251245, 417925, 527845, 624025, 841325, 1256225, 1822153, 2639225, 3668177, 7706537, 9110765, 11507021, 18340885, 38532685, 45553825, 57535105, 91704425, 192663425, 287675525, 840012533, 4200062665, 21000313325]

約数ペア:

[(1, 21000313325), (5, 4200062665), (25, 840012533), (73, 287675525), (109, 192663425), (229, 91704425), (365, 57535105), (461, 45553825), (545, 38532685), (1145, 18340885), (1825, 11507021), (2305, 9110765), (2725, 7706537), (5725, 3668177), (7957, 2639225), (11525, 1822153), (16717, 1256225), (24961, 841325), (33653, 624025), (39785, 527845), (50249, 417925), (83585, 251245), (105569, 198925), (124805, 168265)]