20797440

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{677}}^1$

素因数の和:707

約数の個数: 96

約数和(自身を含む): 66633840

約数和(自身を除く): 45836400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 677, 768, 960, 1024, 1280, 1354, 1536, 1920, 2031, 2048, 2560, 2708, 3072, 3385, 3840, 4062, 5120, 5416, 6144, 6770, 7680, 8124, 10155, 10240, 10832, 13540, 15360, 16248, 20310, 21664, 27080, 30720, 32496, 40620, 43328, 54160, 64992, 81240, 86656, 108320, 129984, 162480, 173312, 216640, 259968, 324960, 346624, 433280, 519936, 649920, 693248, 866560, 1039872, 1299840, 1386496, 1733120, 2079744, 2599680, 3466240, 4159488, 5199360, 6932480, 10398720, 20797440]

約数ペア:

[(1, 20797440), (2, 10398720), (3, 6932480), (4, 5199360), (5, 4159488), (6, 3466240), (8, 2599680), (10, 2079744), (12, 1733120), (15, 1386496), (16, 1299840), (20, 1039872), (24, 866560), (30, 693248), (32, 649920), (40, 519936), (48, 433280), (60, 346624), (64, 324960), (80, 259968), (96, 216640), (120, 173312), (128, 162480), (160, 129984), (192, 108320), (240, 86656), (256, 81240), (320, 64992), (384, 54160), (480, 43328), (512, 40620), (640, 32496), (677, 30720), (768, 27080), (960, 21664), (1024, 20310), (1280, 16248), (1354, 15360), (1536, 13540), (1920, 10832), (2031, 10240), (2048, 10155), (2560, 8124), (2708, 7680), (3072, 6770), (3385, 6144), (3840, 5416), (4062, 5120)]