21287392

素因数分解:

$2^5\times 7^1\times {\mathrm{29}}^2\times {\mathrm{113}}^1$

素因数の和:188

約数の個数: 72

約数和(自身を含む): 50044176

約数和(自身を除く): 28756784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 112, 113, 116, 203, 224, 226, 232, 406, 452, 464, 791, 812, 841, 904, 928, 1582, 1624, 1682, 1808, 3164, 3248, 3277, 3364, 3616, 5887, 6328, 6496, 6554, 6728, 11774, 12656, 13108, 13456, 22939, 23548, 25312, 26216, 26912, 45878, 47096, 52432, 91756, 94192, 95033, 104864, 183512, 188384, 190066, 367024, 380132, 665231, 734048, 760264, 1330462, 1520528, 2660924, 3041056, 5321848, 10643696, 21287392]

約数ペア:

[(1, 21287392), (2, 10643696), (4, 5321848), (7, 3041056), (8, 2660924), (14, 1520528), (16, 1330462), (28, 760264), (29, 734048), (32, 665231), (56, 380132), (58, 367024), (112, 190066), (113, 188384), (116, 183512), (203, 104864), (224, 95033), (226, 94192), (232, 91756), (406, 52432), (452, 47096), (464, 45878), (791, 26912), (812, 26216), (841, 25312), (904, 23548), (928, 22939), (1582, 13456), (1624, 13108), (1682, 12656), (1808, 11774), (3164, 6728), (3248, 6554), (3277, 6496), (3364, 6328), (3616, 5887)]