20877675

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:82

約数の個数: 144

約数和(自身を含む): 47496960

約数和(自身を除く): 26619285

約数列:

[1, 3, 5, 7, 13, 15, 19, 21, 23, 25, 35, 39, 49, 57, 65, 69, 75, 91, 95, 105, 115, 133, 147, 161, 175, 195, 245, 247, 273, 285, 299, 325, 345, 399, 437, 455, 475, 483, 525, 575, 637, 665, 735, 741, 805, 897, 931, 975, 1127, 1225, 1235, 1311, 1365, 1425, 1495, 1725, 1729, 1911, 1995, 2093, 2185, 2275, 2415, 2793, 3059, 3185, 3325, 3381, 3675, 3705, 4025, 4485, 4655, 5187, 5635, 5681, 6175, 6279, 6555, 6825, 7475, 8645, 9177, 9555, 9975, 10465, 10925, 12075, 12103, 13965, 14651, 15295, 15925, 16905, 17043, 18525, 21413, 22425, 23275, 25935, 28175, 28405, 31395, 32775, 36309, 39767, 43225, 43953, 45885, 47775, 52325, 60515, 64239, 69825, 73255, 76475, 84525, 85215, 107065, 119301, 129675, 142025, 156975, 181545, 198835, 219765, 229425, 278369, 302575, 321195, 366275, 426075, 535325, 596505, 835107, 907725, 994175, 1098825, 1391845, 1605975, 2982525, 4175535, 6959225, 20877675]

約数ペア:

[(1, 20877675), (3, 6959225), (5, 4175535), (7, 2982525), (13, 1605975), (15, 1391845), (19, 1098825), (21, 994175), (23, 907725), (25, 835107), (35, 596505), (39, 535325), (49, 426075), (57, 366275), (65, 321195), (69, 302575), (75, 278369), (91, 229425), (95, 219765), (105, 198835), (115, 181545), (133, 156975), (147, 142025), (161, 129675), (175, 119301), (195, 107065), (245, 85215), (247, 84525), (273, 76475), (285, 73255), (299, 69825), (325, 64239), (345, 60515), (399, 52325), (437, 47775), (455, 45885), (475, 43953), (483, 43225), (525, 39767), (575, 36309), (637, 32775), (665, 31395), (735, 28405), (741, 28175), (805, 25935), (897, 23275), (931, 22425), (975, 21413), (1127, 18525), (1225, 17043), (1235, 16905), (1311, 15925), (1365, 15295), (1425, 14651), (1495, 13965), (1725, 12103), (1729, 12075), (1911, 10925), (1995, 10465), (2093, 9975), (2185, 9555), (2275, 9177), (2415, 8645), (2793, 7475), (3059, 6825), (3185, 6555), (3325, 6279), (3381, 6175), (3675, 5681), (3705, 5635), (4025, 5187), (4485, 4655)]