20640228

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:309

約数の個数: 96

約数和(自身を含む): 58732800

約数和(自身を除く): 38092572

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 37, 42, 58, 74, 84, 87, 111, 116, 148, 174, 203, 222, 229, 259, 348, 406, 444, 458, 518, 609, 687, 777, 812, 916, 1036, 1073, 1218, 1374, 1554, 1603, 2146, 2436, 2748, 3108, 3206, 3219, 4292, 4809, 6412, 6438, 6641, 7511, 8473, 9618, 12876, 13282, 15022, 16946, 19236, 19923, 22533, 25419, 26564, 30044, 33892, 39846, 45066, 46487, 50838, 59311, 79692, 90132, 92974, 101676, 118622, 139461, 177933, 185948, 237244, 245717, 278922, 355866, 491434, 557844, 711732, 737151, 982868, 1474302, 1720019, 2948604, 3440038, 5160057, 6880076, 10320114, 20640228]

約数ペア:

[(1, 20640228), (2, 10320114), (3, 6880076), (4, 5160057), (6, 3440038), (7, 2948604), (12, 1720019), (14, 1474302), (21, 982868), (28, 737151), (29, 711732), (37, 557844), (42, 491434), (58, 355866), (74, 278922), (84, 245717), (87, 237244), (111, 185948), (116, 177933), (148, 139461), (174, 118622), (203, 101676), (222, 92974), (229, 90132), (259, 79692), (348, 59311), (406, 50838), (444, 46487), (458, 45066), (518, 39846), (609, 33892), (687, 30044), (777, 26564), (812, 25419), (916, 22533), (1036, 19923), (1073, 19236), (1218, 16946), (1374, 15022), (1554, 13282), (1603, 12876), (2146, 9618), (2436, 8473), (2748, 7511), (3108, 6641), (3206, 6438), (3219, 6412), (4292, 4809)]