20802320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{307}}^1$

素因数の和:349

約数の個数: 120

約数和(自身を含む): 60954432

約数和(自身を除く): 40152112

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 154, 176, 220, 242, 280, 307, 308, 385, 440, 484, 560, 605, 614, 616, 770, 847, 880, 968, 1210, 1228, 1232, 1535, 1540, 1694, 1936, 2149, 2420, 2456, 3070, 3080, 3377, 3388, 4235, 4298, 4840, 4912, 6140, 6160, 6754, 6776, 8470, 8596, 9680, 10745, 12280, 13508, 13552, 16885, 16940, 17192, 21490, 23639, 24560, 27016, 33770, 33880, 34384, 37147, 42980, 47278, 54032, 67540, 67760, 74294, 85960, 94556, 118195, 135080, 148588, 171920, 185735, 189112, 236390, 260029, 270160, 297176, 371470, 378224, 472780, 520058, 594352, 742940, 945560, 1040116, 1300145, 1485880, 1891120, 2080232, 2600290, 2971760, 4160464, 5200580, 10401160, 20802320]

約数ペア:

[(1, 20802320), (2, 10401160), (4, 5200580), (5, 4160464), (7, 2971760), (8, 2600290), (10, 2080232), (11, 1891120), (14, 1485880), (16, 1300145), (20, 1040116), (22, 945560), (28, 742940), (35, 594352), (40, 520058), (44, 472780), (55, 378224), (56, 371470), (70, 297176), (77, 270160), (80, 260029), (88, 236390), (110, 189112), (112, 185735), (121, 171920), (140, 148588), (154, 135080), (176, 118195), (220, 94556), (242, 85960), (280, 74294), (307, 67760), (308, 67540), (385, 54032), (440, 47278), (484, 42980), (560, 37147), (605, 34384), (614, 33880), (616, 33770), (770, 27016), (847, 24560), (880, 23639), (968, 21490), (1210, 17192), (1228, 16940), (1232, 16885), (1535, 13552), (1540, 13508), (1694, 12280), (1936, 10745), (2149, 9680), (2420, 8596), (2456, 8470), (3070, 6776), (3080, 6754), (3377, 6160), (3388, 6140), (4235, 4912), (4298, 4840)]