20749440

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:230

約数の個数: 128

約数和(自身を含む): 67417920

約数和(自身を除く): 46668480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 101, 107, 120, 128, 160, 192, 202, 214, 240, 303, 320, 321, 384, 404, 428, 480, 505, 535, 606, 640, 642, 808, 856, 960, 1010, 1070, 1212, 1284, 1515, 1605, 1616, 1712, 1920, 2020, 2140, 2424, 2568, 3030, 3210, 3232, 3424, 4040, 4280, 4848, 5136, 6060, 6420, 6464, 6848, 8080, 8560, 9696, 10272, 10807, 12120, 12840, 12928, 13696, 16160, 17120, 19392, 20544, 21614, 24240, 25680, 32320, 32421, 34240, 38784, 41088, 43228, 48480, 51360, 54035, 64640, 64842, 68480, 86456, 96960, 102720, 108070, 129684, 162105, 172912, 193920, 205440, 216140, 259368, 324210, 345824, 432280, 518736, 648420, 691648, 864560, 1037472, 1296840, 1383296, 1729120, 2074944, 2593680, 3458240, 4149888, 5187360, 6916480, 10374720, 20749440]

約数ペア:

[(1, 20749440), (2, 10374720), (3, 6916480), (4, 5187360), (5, 4149888), (6, 3458240), (8, 2593680), (10, 2074944), (12, 1729120), (15, 1383296), (16, 1296840), (20, 1037472), (24, 864560), (30, 691648), (32, 648420), (40, 518736), (48, 432280), (60, 345824), (64, 324210), (80, 259368), (96, 216140), (101, 205440), (107, 193920), (120, 172912), (128, 162105), (160, 129684), (192, 108070), (202, 102720), (214, 96960), (240, 86456), (303, 68480), (320, 64842), (321, 64640), (384, 54035), (404, 51360), (428, 48480), (480, 43228), (505, 41088), (535, 38784), (606, 34240), (640, 32421), (642, 32320), (808, 25680), (856, 24240), (960, 21614), (1010, 20544), (1070, 19392), (1212, 17120), (1284, 16160), (1515, 13696), (1605, 12928), (1616, 12840), (1712, 12120), (1920, 10807), (2020, 10272), (2140, 9696), (2424, 8560), (2568, 8080), (3030, 6848), (3210, 6464), (3232, 6420), (3424, 6060), (4040, 5136), (4280, 4848)]