21985712

素因数分解:

$2^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{967}}^1$

素因数の和:1018

約数の個数: 60

約数和(自身を含む): 51313680

約数和(自身を除く): 29327968

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 49, 56, 58, 98, 112, 116, 196, 203, 232, 392, 406, 464, 784, 812, 967, 1421, 1624, 1934, 2842, 3248, 3868, 5684, 6769, 7736, 11368, 13538, 15472, 22736, 27076, 28043, 47383, 54152, 56086, 94766, 108304, 112172, 189532, 196301, 224344, 379064, 392602, 448688, 758128, 785204, 1374107, 1570408, 2748214, 3140816, 5496428, 10992856, 21985712]

約数ペア:

[(1, 21985712), (2, 10992856), (4, 5496428), (7, 3140816), (8, 2748214), (14, 1570408), (16, 1374107), (28, 785204), (29, 758128), (49, 448688), (56, 392602), (58, 379064), (98, 224344), (112, 196301), (116, 189532), (196, 112172), (203, 108304), (232, 94766), (392, 56086), (406, 54152), (464, 47383), (784, 28043), (812, 27076), (967, 22736), (1421, 15472), (1624, 13538), (1934, 11368), (2842, 7736), (3248, 6769), (3868, 5684)]