20493760

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{1307}}^1$

素因数の和:1338

約数の個数: 84

約数和(自身を含む): 56811672

約数和(自身を除く): 36317912

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, 1307, 1568, 1960, 2240, 2614, 3136, 3920, 5228, 6535, 7840, 9149, 10456, 13070, 15680, 18298, 20912, 26140, 36596, 41824, 45745, 52280, 64043, 73192, 83648, 91490, 104560, 128086, 146384, 182980, 209120, 256172, 292768, 320215, 365960, 418240, 512344, 585536, 640430, 731920, 1024688, 1280860, 1463840, 2049376, 2561720, 2927680, 4098752, 5123440, 10246880, 20493760]

約数ペア:

[(1, 20493760), (2, 10246880), (4, 5123440), (5, 4098752), (7, 2927680), (8, 2561720), (10, 2049376), (14, 1463840), (16, 1280860), (20, 1024688), (28, 731920), (32, 640430), (35, 585536), (40, 512344), (49, 418240), (56, 365960), (64, 320215), (70, 292768), (80, 256172), (98, 209120), (112, 182980), (140, 146384), (160, 128086), (196, 104560), (224, 91490), (245, 83648), (280, 73192), (320, 64043), (392, 52280), (448, 45745), (490, 41824), (560, 36596), (784, 26140), (980, 20912), (1120, 18298), (1307, 15680), (1568, 13070), (1960, 10456), (2240, 9149), (2614, 7840), (3136, 6535), (3920, 5228)]