21491792

素因数分解:

$2^4\times 7^2\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:448

約数の個数: 60

約数和(自身を含む): 49193280

約数和(自身を除く): 27701488

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 79, 98, 112, 158, 196, 316, 347, 392, 553, 632, 694, 784, 1106, 1264, 1388, 2212, 2429, 2776, 3871, 4424, 4858, 5552, 7742, 8848, 9716, 15484, 17003, 19432, 27413, 30968, 34006, 38864, 54826, 61936, 68012, 109652, 136024, 191891, 219304, 272048, 383782, 438608, 767564, 1343237, 1535128, 2686474, 3070256, 5372948, 10745896, 21491792]

約数ペア:

[(1, 21491792), (2, 10745896), (4, 5372948), (7, 3070256), (8, 2686474), (14, 1535128), (16, 1343237), (28, 767564), (49, 438608), (56, 383782), (79, 272048), (98, 219304), (112, 191891), (158, 136024), (196, 109652), (316, 68012), (347, 61936), (392, 54826), (553, 38864), (632, 34006), (694, 30968), (784, 27413), (1106, 19432), (1264, 17003), (1388, 15484), (2212, 9716), (2429, 8848), (2776, 7742), (3871, 5552), (4424, 4858)]