20545360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{631}}^1$

素因数の和:692

約数の個数: 80

約数和(自身を含む): 53603712

約数和(自身を除く): 33058352

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 631, 740, 814, 880, 1262, 1480, 1628, 2035, 2524, 2960, 3155, 3256, 4070, 5048, 6310, 6512, 6941, 8140, 10096, 12620, 13882, 16280, 23347, 25240, 27764, 32560, 34705, 46694, 50480, 55528, 69410, 93388, 111056, 116735, 138820, 186776, 233470, 256817, 277640, 373552, 466940, 513634, 555280, 933880, 1027268, 1284085, 1867760, 2054536, 2568170, 4109072, 5136340, 10272680, 20545360]

約数ペア:

[(1, 20545360), (2, 10272680), (4, 5136340), (5, 4109072), (8, 2568170), (10, 2054536), (11, 1867760), (16, 1284085), (20, 1027268), (22, 933880), (37, 555280), (40, 513634), (44, 466940), (55, 373552), (74, 277640), (80, 256817), (88, 233470), (110, 186776), (148, 138820), (176, 116735), (185, 111056), (220, 93388), (296, 69410), (370, 55528), (407, 50480), (440, 46694), (592, 34705), (631, 32560), (740, 27764), (814, 25240), (880, 23347), (1262, 16280), (1480, 13882), (1628, 12620), (2035, 10096), (2524, 8140), (2960, 6941), (3155, 6512), (3256, 6310), (4070, 5048)]