20648600

素因数分解:

$2^3\times 5^2\times 7^4\times {\mathrm{43}}^1$

素因数の和:87

約数の個数: 120

約数和(自身を含む): 57308460

約数和(自身を除く): 36659860

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 43, 49, 50, 56, 70, 86, 98, 100, 140, 172, 175, 196, 200, 215, 245, 280, 301, 343, 344, 350, 392, 430, 490, 602, 686, 700, 860, 980, 1075, 1204, 1225, 1372, 1400, 1505, 1715, 1720, 1960, 2107, 2150, 2401, 2408, 2450, 2744, 3010, 3430, 4214, 4300, 4802, 4900, 6020, 6860, 7525, 8428, 8575, 8600, 9604, 9800, 10535, 12005, 12040, 13720, 14749, 15050, 16856, 17150, 19208, 21070, 24010, 29498, 30100, 34300, 42140, 48020, 52675, 58996, 60025, 60200, 68600, 73745, 84280, 96040, 103243, 105350, 117992, 120050, 147490, 206486, 210700, 240100, 294980, 368725, 412972, 421400, 480200, 516215, 589960, 737450, 825944, 1032430, 1474900, 2064860, 2581075, 2949800, 4129720, 5162150, 10324300, 20648600]

約数ペア:

[(1, 20648600), (2, 10324300), (4, 5162150), (5, 4129720), (7, 2949800), (8, 2581075), (10, 2064860), (14, 1474900), (20, 1032430), (25, 825944), (28, 737450), (35, 589960), (40, 516215), (43, 480200), (49, 421400), (50, 412972), (56, 368725), (70, 294980), (86, 240100), (98, 210700), (100, 206486), (140, 147490), (172, 120050), (175, 117992), (196, 105350), (200, 103243), (215, 96040), (245, 84280), (280, 73745), (301, 68600), (343, 60200), (344, 60025), (350, 58996), (392, 52675), (430, 48020), (490, 42140), (602, 34300), (686, 30100), (700, 29498), (860, 24010), (980, 21070), (1075, 19208), (1204, 17150), (1225, 16856), (1372, 15050), (1400, 14749), (1505, 13720), (1715, 12040), (1720, 12005), (1960, 10535), (2107, 9800), (2150, 9604), (2401, 8600), (2408, 8575), (2450, 8428), (2744, 7525), (3010, 6860), (3430, 6020), (4214, 4900), (4300, 4802)]