20969760

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^2$

素因数の和:183

約数の個数: 144

約数和(自身を含む): 76458816

約数和(自身を除く): 55489056

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 79, 80, 84, 96, 105, 112, 120, 140, 158, 160, 168, 210, 224, 237, 240, 280, 316, 336, 395, 420, 474, 480, 553, 560, 632, 672, 790, 840, 948, 1106, 1120, 1185, 1264, 1580, 1659, 1680, 1896, 2212, 2370, 2528, 2765, 3160, 3318, 3360, 3792, 4424, 4740, 5530, 6241, 6320, 6636, 7584, 8295, 8848, 9480, 11060, 12482, 12640, 13272, 16590, 17696, 18723, 18960, 22120, 24964, 26544, 31205, 33180, 37446, 37920, 43687, 44240, 49928, 53088, 62410, 66360, 74892, 87374, 88480, 93615, 99856, 124820, 131061, 132720, 149784, 174748, 187230, 199712, 218435, 249640, 262122, 265440, 299568, 349496, 374460, 436870, 499280, 524244, 599136, 655305, 698992, 748920, 873740, 998560, 1048488, 1310610, 1397984, 1497840, 1747480, 2096976, 2621220, 2995680, 3494960, 4193952, 5242440, 6989920, 10484880, 20969760]

約数ペア:

[(1, 20969760), (2, 10484880), (3, 6989920), (4, 5242440), (5, 4193952), (6, 3494960), (7, 2995680), (8, 2621220), (10, 2096976), (12, 1747480), (14, 1497840), (15, 1397984), (16, 1310610), (20, 1048488), (21, 998560), (24, 873740), (28, 748920), (30, 698992), (32, 655305), (35, 599136), (40, 524244), (42, 499280), (48, 436870), (56, 374460), (60, 349496), (70, 299568), (79, 265440), (80, 262122), (84, 249640), (96, 218435), (105, 199712), (112, 187230), (120, 174748), (140, 149784), (158, 132720), (160, 131061), (168, 124820), (210, 99856), (224, 93615), (237, 88480), (240, 87374), (280, 74892), (316, 66360), (336, 62410), (395, 53088), (420, 49928), (474, 44240), (480, 43687), (553, 37920), (560, 37446), (632, 33180), (672, 31205), (790, 26544), (840, 24964), (948, 22120), (1106, 18960), (1120, 18723), (1185, 17696), (1264, 16590), (1580, 13272), (1659, 12640), (1680, 12482), (1896, 11060), (2212, 9480), (2370, 8848), (2528, 8295), (2765, 7584), (3160, 6636), (3318, 6320), (3360, 6241), (3792, 5530), (4424, 4740)]