20235285

素因数分解:

$3^3\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:77

約数の個数: 128

約数和(自身を含む): 46080000

約数和(自身を除く): 25844715

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 23, 27, 35, 45, 49, 57, 63, 69, 95, 105, 115, 133, 135, 147, 161, 171, 189, 207, 245, 285, 315, 343, 345, 399, 437, 441, 483, 513, 621, 665, 735, 805, 855, 931, 945, 1029, 1035, 1127, 1197, 1311, 1323, 1449, 1715, 1995, 2185, 2205, 2415, 2565, 2793, 3059, 3087, 3105, 3381, 3591, 3933, 4347, 4655, 5145, 5635, 5985, 6517, 6555, 6615, 7245, 7889, 8379, 9177, 9261, 10143, 11799, 13965, 15295, 15435, 16905, 17955, 19551, 19665, 21413, 21735, 23667, 25137, 27531, 30429, 32585, 39445, 41895, 45885, 46305, 50715, 58653, 58995, 64239, 71001, 82593, 97755, 107065, 118335, 125685, 137655, 149891, 152145, 175959, 192717, 213003, 293265, 321195, 355005, 412965, 449673, 578151, 749455, 879795, 963585, 1065015, 1349019, 2248365, 2890755, 4047057, 6745095, 20235285]

約数ペア:

[(1, 20235285), (3, 6745095), (5, 4047057), (7, 2890755), (9, 2248365), (15, 1349019), (19, 1065015), (21, 963585), (23, 879795), (27, 749455), (35, 578151), (45, 449673), (49, 412965), (57, 355005), (63, 321195), (69, 293265), (95, 213003), (105, 192717), (115, 175959), (133, 152145), (135, 149891), (147, 137655), (161, 125685), (171, 118335), (189, 107065), (207, 97755), (245, 82593), (285, 71001), (315, 64239), (343, 58995), (345, 58653), (399, 50715), (437, 46305), (441, 45885), (483, 41895), (513, 39445), (621, 32585), (665, 30429), (735, 27531), (805, 25137), (855, 23667), (931, 21735), (945, 21413), (1029, 19665), (1035, 19551), (1127, 17955), (1197, 16905), (1311, 15435), (1323, 15295), (1449, 13965), (1715, 11799), (1995, 10143), (2185, 9261), (2205, 9177), (2415, 8379), (2565, 7889), (2793, 7245), (3059, 6615), (3087, 6555), (3105, 6517), (3381, 5985), (3591, 5635), (3933, 5145), (4347, 4655)]