217695280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{247381}}^1$

素因数の和:247405

約数の個数: 40

約数和(自身を含む): 552156624

約数和(自身を除く): 334461344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 247381, 494762, 989524, 1236905, 1979048, 2473810, 2721191, 3958096, 4947620, 5442382, 9895240, 10884764, 13605955, 19790480, 21769528, 27211910, 43539056, 54423820, 108847640, 217695280]

約数ペア:

[(1, 217695280), (2, 108847640), (4, 54423820), (5, 43539056), (8, 27211910), (10, 21769528), (11, 19790480), (16, 13605955), (20, 10884764), (22, 9895240), (40, 5442382), (44, 4947620), (55, 3958096), (80, 2721191), (88, 2473810), (110, 1979048), (176, 1236905), (220, 989524), (440, 494762), (880, 247381)]