21077084

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 44210880

約数和(自身を除く): 23133796

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 101, 116, 202, 203, 257, 404, 406, 514, 707, 812, 1028, 1414, 1799, 2828, 2929, 3598, 5858, 7196, 7453, 11716, 14906, 20503, 25957, 29812, 41006, 51914, 52171, 82012, 103828, 104342, 181699, 208684, 363398, 726796, 752753, 1505506, 3011012, 5269271, 10538542, 21077084]

約数ペア:

[(1, 21077084), (2, 10538542), (4, 5269271), (7, 3011012), (14, 1505506), (28, 752753), (29, 726796), (58, 363398), (101, 208684), (116, 181699), (202, 104342), (203, 103828), (257, 82012), (404, 52171), (406, 51914), (514, 41006), (707, 29812), (812, 25957), (1028, 20503), (1414, 14906), (1799, 11716), (2828, 7453), (2929, 7196), (3598, 5858)]