20887615990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1\times {\mathrm{144461}}^1$

素因数の和:145248

約数の個数: 32

約数和(自身を含む): 39628815840

約数和(自身を除く): 18741199850

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 761, 1522, 3805, 7610, 14459, 28918, 72295, 144461, 144590, 288922, 722305, 1444610, 2744759, 5489518, 13723795, 27447590, 109934821, 219869642, 549674105, 1099348210, 2088761599, 4177523198, 10443807995, 20887615990]

約数ペア:

[(1, 20887615990), (2, 10443807995), (5, 4177523198), (10, 2088761599), (19, 1099348210), (38, 549674105), (95, 219869642), (190, 109934821), (761, 27447590), (1522, 13723795), (3805, 5489518), (7610, 2744759), (14459, 1444610), (28918, 722305), (72295, 288922), (144461, 144590)]