217562840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{569}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 545832000

約数和(自身を除く): 328269160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 121, 158, 220, 242, 316, 395, 440, 484, 569, 605, 632, 790, 869, 968, 1138, 1210, 1580, 1738, 2276, 2420, 2845, 3160, 3476, 4345, 4552, 4840, 5690, 6259, 6952, 8690, 9559, 11380, 12518, 17380, 19118, 22760, 25036, 31295, 34760, 38236, 44951, 47795, 50072, 62590, 68849, 76472, 89902, 95590, 125180, 137698, 179804, 191180, 224755, 250360, 275396, 344245, 359608, 382360, 449510, 494461, 550792, 688490, 899020, 988922, 1376980, 1798040, 1977844, 2472305, 2753960, 3955688, 4944610, 5439071, 9889220, 10878142, 19778440, 21756284, 27195355, 43512568, 54390710, 108781420, 217562840]

約数ペア:

[(1, 217562840), (2, 108781420), (4, 54390710), (5, 43512568), (8, 27195355), (10, 21756284), (11, 19778440), (20, 10878142), (22, 9889220), (40, 5439071), (44, 4944610), (55, 3955688), (79, 2753960), (88, 2472305), (110, 1977844), (121, 1798040), (158, 1376980), (220, 988922), (242, 899020), (316, 688490), (395, 550792), (440, 494461), (484, 449510), (569, 382360), (605, 359608), (632, 344245), (790, 275396), (869, 250360), (968, 224755), (1138, 191180), (1210, 179804), (1580, 137698), (1738, 125180), (2276, 95590), (2420, 89902), (2845, 76472), (3160, 68849), (3476, 62590), (4345, 50072), (4552, 47795), (4840, 44951), (5690, 38236), (6259, 34760), (6952, 31295), (8690, 25036), (9559, 22760), (11380, 19118), (12518, 17380)]