21104895

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{239}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 40135680

約数和(自身を除く): 19030785

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 239, 435, 609, 717, 841, 1015, 1195, 1673, 2523, 3045, 3585, 4205, 5019, 5887, 6931, 8365, 12615, 17661, 20793, 25095, 29435, 34655, 48517, 88305, 103965, 145551, 200999, 242585, 602997, 727755, 1004995, 1406993, 3014985, 4220979, 7034965, 21104895]

約数ペア:

[(1, 21104895), (3, 7034965), (5, 4220979), (7, 3014985), (15, 1406993), (21, 1004995), (29, 727755), (35, 602997), (87, 242585), (105, 200999), (145, 145551), (203, 103965), (239, 88305), (435, 48517), (609, 34655), (717, 29435), (841, 25095), (1015, 20793), (1195, 17661), (1673, 12615), (2523, 8365), (3045, 6931), (3585, 5887), (4205, 5019)]