21154936

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 25501064

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 79, 88, 136, 158, 179, 187, 316, 358, 374, 632, 716, 748, 869, 1343, 1432, 1496, 1738, 1969, 2686, 3043, 3476, 3938, 5372, 6086, 6952, 7876, 10744, 12172, 14141, 14773, 15752, 24344, 28282, 29546, 33473, 56564, 59092, 66946, 113128, 118184, 133892, 155551, 240397, 267784, 311102, 480794, 622204, 961588, 1244408, 1923176, 2644367, 5288734, 10577468, 21154936]

約数ペア:

[(1, 21154936), (2, 10577468), (4, 5288734), (8, 2644367), (11, 1923176), (17, 1244408), (22, 961588), (34, 622204), (44, 480794), (68, 311102), (79, 267784), (88, 240397), (136, 155551), (158, 133892), (179, 118184), (187, 113128), (316, 66946), (358, 59092), (374, 56564), (632, 33473), (716, 29546), (748, 28282), (869, 24344), (1343, 15752), (1432, 14773), (1496, 14141), (1738, 12172), (1969, 10744), (2686, 7876), (3043, 6952), (3476, 6086), (3938, 5372)]