20821472

素因数分解:

$2^5\times 7^4\times {\mathrm{271}}^1$

素因数の和:309

約数の個数: 60

約数和(自身を含む): 47997936

約数和(自身を除く): 27176464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 271, 343, 392, 542, 686, 784, 1084, 1372, 1568, 1897, 2168, 2401, 2744, 3794, 4336, 4802, 5488, 7588, 8672, 9604, 10976, 13279, 15176, 19208, 26558, 30352, 38416, 53116, 60704, 76832, 92953, 106232, 185906, 212464, 371812, 424928, 650671, 743624, 1301342, 1487248, 2602684, 2974496, 5205368, 10410736, 20821472]

約数ペア:

[(1, 20821472), (2, 10410736), (4, 5205368), (7, 2974496), (8, 2602684), (14, 1487248), (16, 1301342), (28, 743624), (32, 650671), (49, 424928), (56, 371812), (98, 212464), (112, 185906), (196, 106232), (224, 92953), (271, 76832), (343, 60704), (392, 53116), (542, 38416), (686, 30352), (784, 26558), (1084, 19208), (1372, 15176), (1568, 13279), (1897, 10976), (2168, 9604), (2401, 8672), (2744, 7588), (3794, 5488), (4336, 4802)]