20278280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2711}}^1$

素因数の和:2750

約数の個数: 64

約数和(自身を含む): 52721280

約数和(自身を除く): 32443000

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2711, 3740, 5422, 7480, 10844, 13555, 21688, 27110, 29821, 46087, 54220, 59642, 92174, 108440, 119284, 149105, 184348, 230435, 238568, 298210, 368696, 460870, 506957, 596420, 921740, 1013914, 1192840, 1843480, 2027828, 2534785, 4055656, 5069570, 10139140, 20278280]

約数ペア:

[(1, 20278280), (2, 10139140), (4, 5069570), (5, 4055656), (8, 2534785), (10, 2027828), (11, 1843480), (17, 1192840), (20, 1013914), (22, 921740), (34, 596420), (40, 506957), (44, 460870), (55, 368696), (68, 298210), (85, 238568), (88, 230435), (110, 184348), (136, 149105), (170, 119284), (187, 108440), (220, 92174), (340, 59642), (374, 54220), (440, 46087), (680, 29821), (748, 27110), (935, 21688), (1496, 13555), (1870, 10844), (2711, 7480), (3740, 5422)]