20713280

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{1321}}^1$

素因数の和:1352

約数の個数: 84

約数和(自身を含む): 57419748

約数和(自身を除く): 36706468

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 784, 980, 1120, 1321, 1568, 1960, 2240, 2642, 3136, 3920, 5284, 6605, 7840, 9247, 10568, 13210, 15680, 18494, 21136, 26420, 36988, 42272, 46235, 52840, 64729, 73976, 84544, 92470, 105680, 129458, 147952, 184940, 211360, 258916, 295904, 323645, 369880, 422720, 517832, 591808, 647290, 739760, 1035664, 1294580, 1479520, 2071328, 2589160, 2959040, 4142656, 5178320, 10356640, 20713280]

約数ペア:

[(1, 20713280), (2, 10356640), (4, 5178320), (5, 4142656), (7, 2959040), (8, 2589160), (10, 2071328), (14, 1479520), (16, 1294580), (20, 1035664), (28, 739760), (32, 647290), (35, 591808), (40, 517832), (49, 422720), (56, 369880), (64, 323645), (70, 295904), (80, 258916), (98, 211360), (112, 184940), (140, 147952), (160, 129458), (196, 105680), (224, 92470), (245, 84544), (280, 73976), (320, 64729), (392, 52840), (448, 46235), (490, 42272), (560, 36988), (784, 26420), (980, 21136), (1120, 18494), (1321, 15680), (1568, 13210), (1960, 10568), (2240, 9247), (2642, 7840), (3136, 6605), (3920, 5284)]