81250840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{9719}}^1$

素因数の和:9760

約数の個数: 64

約数和(自身を含む): 209952000

約数和(自身を除く): 128701160

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 4180, 8360, 9719, 19438, 38876, 48595, 77752, 97190, 106909, 184661, 194380, 213818, 369322, 388760, 427636, 534545, 738644, 855272, 923305, 1069090, 1477288, 1846610, 2031271, 2138180, 3693220, 4062542, 4276360, 7386440, 8125084, 10156355, 16250168, 20312710, 40625420, 81250840]

約数ペア:

[(1, 81250840), (2, 40625420), (4, 20312710), (5, 16250168), (8, 10156355), (10, 8125084), (11, 7386440), (19, 4276360), (20, 4062542), (22, 3693220), (38, 2138180), (40, 2031271), (44, 1846610), (55, 1477288), (76, 1069090), (88, 923305), (95, 855272), (110, 738644), (152, 534545), (190, 427636), (209, 388760), (220, 369322), (380, 213818), (418, 194380), (440, 184661), (760, 106909), (836, 97190), (1045, 77752), (1672, 48595), (2090, 38876), (4180, 19438), (8360, 9719)]