28715720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 75411000

約数和(自身を除く): 46695280

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 121, 136, 170, 187, 220, 242, 340, 349, 374, 440, 484, 605, 680, 698, 748, 935, 968, 1210, 1396, 1496, 1745, 1870, 2057, 2420, 2792, 3490, 3740, 3839, 4114, 4840, 5933, 6980, 7480, 7678, 8228, 10285, 11866, 13960, 15356, 16456, 19195, 20570, 23732, 29665, 30712, 38390, 41140, 42229, 47464, 59330, 65263, 76780, 82280, 84458, 118660, 130526, 153560, 168916, 211145, 237320, 261052, 326315, 337832, 422290, 522104, 652630, 717893, 844580, 1305260, 1435786, 1689160, 2610520, 2871572, 3589465, 5743144, 7178930, 14357860, 28715720]

約数ペア:

[(1, 28715720), (2, 14357860), (4, 7178930), (5, 5743144), (8, 3589465), (10, 2871572), (11, 2610520), (17, 1689160), (20, 1435786), (22, 1305260), (34, 844580), (40, 717893), (44, 652630), (55, 522104), (68, 422290), (85, 337832), (88, 326315), (110, 261052), (121, 237320), (136, 211145), (170, 168916), (187, 153560), (220, 130526), (242, 118660), (340, 84458), (349, 82280), (374, 76780), (440, 65263), (484, 59330), (605, 47464), (680, 42229), (698, 41140), (748, 38390), (935, 30712), (968, 29665), (1210, 23732), (1396, 20570), (1496, 19195), (1745, 16456), (1870, 15356), (2057, 13960), (2420, 11866), (2792, 10285), (3490, 8228), (3740, 7678), (3839, 7480), (4114, 6980), (4840, 5933)]