21522872

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^2\times {\mathrm{457}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 47870160

約数和(自身を除く): 26347288

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 116, 203, 232, 406, 457, 812, 841, 914, 1624, 1682, 1828, 3199, 3364, 3656, 5887, 6398, 6728, 11774, 12796, 13253, 23548, 25592, 26506, 47096, 53012, 92771, 106024, 185542, 371084, 384337, 742168, 768674, 1537348, 2690359, 3074696, 5380718, 10761436, 21522872]

約数ペア:

[(1, 21522872), (2, 10761436), (4, 5380718), (7, 3074696), (8, 2690359), (14, 1537348), (28, 768674), (29, 742168), (56, 384337), (58, 371084), (116, 185542), (203, 106024), (232, 92771), (406, 53012), (457, 47096), (812, 26506), (841, 25592), (914, 23548), (1624, 13253), (1682, 12796), (1828, 11774), (3199, 6728), (3364, 6398), (3656, 5887)]