21541548

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:319

約数の個数: 96

約数和(自身を含む): 61286400

約数和(自身を除く): 39744852

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, 239, 259, 348, 406, 444, 478, 518, 609, 717, 777, 812, 956, 1036, 1073, 1218, 1434, 1554, 1673, 2146, 2436, 2868, 3108, 3219, 3346, 4292, 5019, 6438, 6692, 6931, 7511, 8843, 10038, 12876, 13862, 15022, 17686, 20076, 20793, 22533, 26529, 27724, 30044, 35372, 41586, 45066, 48517, 53058, 61901, 83172, 90132, 97034, 106116, 123802, 145551, 185703, 194068, 247604, 256447, 291102, 371406, 512894, 582204, 742812, 769341, 1025788, 1538682, 1795129, 3077364, 3590258, 5385387, 7180516, 10770774, 21541548]

約数ペア:

[(1, 21541548), (2, 10770774), (3, 7180516), (4, 5385387), (6, 3590258), (7, 3077364), (12, 1795129), (14, 1538682), (21, 1025788), (28, 769341), (29, 742812), (37, 582204), (42, 512894), (58, 371406), (74, 291102), (84, 256447), (87, 247604), (111, 194068), (116, 185703), (148, 145551), (174, 123802), (203, 106116), (222, 97034), (239, 90132), (259, 83172), (348, 61901), (406, 53058), (444, 48517), (478, 45066), (518, 41586), (609, 35372), (717, 30044), (777, 27724), (812, 26529), (956, 22533), (1036, 20793), (1073, 20076), (1218, 17686), (1434, 15022), (1554, 13862), (1673, 12876), (2146, 10038), (2436, 8843), (2868, 7511), (3108, 6931), (3219, 6692), (3346, 6438), (4292, 5019)]