1640474440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{17839}}^1$

素因数の和:17891

約数の個数: 96

約数和(自身を含む): 4270896000

約数和(自身を除く): 2630421560

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 121, 152, 190, 209, 220, 242, 380, 418, 440, 484, 605, 760, 836, 968, 1045, 1210, 1672, 2090, 2299, 2420, 4180, 4598, 4840, 8360, 9196, 11495, 17839, 18392, 22990, 35678, 45980, 71356, 89195, 91960, 142712, 178390, 196229, 338941, 356780, 392458, 677882, 713560, 784916, 981145, 1355764, 1569832, 1694705, 1962290, 2158519, 2711528, 3389410, 3728351, 3924580, 4317038, 6778820, 7456702, 7849160, 8634076, 10792595, 13557640, 14913404, 17268152, 18641755, 21585190, 29826808, 37283510, 41011861, 43170380, 74567020, 82023722, 86340760, 149134040, 164047444, 205059305, 328094888, 410118610, 820237220, 1640474440]

約数ペア:

[(1, 1640474440), (2, 820237220), (4, 410118610), (5, 328094888), (8, 205059305), (10, 164047444), (11, 149134040), (19, 86340760), (20, 82023722), (22, 74567020), (38, 43170380), (40, 41011861), (44, 37283510), (55, 29826808), (76, 21585190), (88, 18641755), (95, 17268152), (110, 14913404), (121, 13557640), (152, 10792595), (190, 8634076), (209, 7849160), (220, 7456702), (242, 6778820), (380, 4317038), (418, 3924580), (440, 3728351), (484, 3389410), (605, 2711528), (760, 2158519), (836, 1962290), (968, 1694705), (1045, 1569832), (1210, 1355764), (1672, 981145), (2090, 784916), (2299, 713560), (2420, 677882), (4180, 392458), (4598, 356780), (4840, 338941), (8360, 196229), (9196, 178390), (11495, 142712), (17839, 91960), (18392, 89195), (22990, 71356), (35678, 45980)]