20402235

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{271}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 40734720

約数和(自身を除く): 20332485

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 239, 271, 315, 717, 813, 1195, 1355, 1673, 1897, 2151, 2439, 3585, 4065, 5019, 5691, 8365, 9485, 10755, 12195, 15057, 17073, 25095, 28455, 64769, 75285, 85365, 194307, 323845, 453383, 582921, 971535, 1360149, 2266915, 2914605, 4080447, 6800745, 20402235]

約数ペア:

[(1, 20402235), (3, 6800745), (5, 4080447), (7, 2914605), (9, 2266915), (15, 1360149), (21, 971535), (35, 582921), (45, 453383), (63, 323845), (105, 194307), (239, 85365), (271, 75285), (315, 64769), (717, 28455), (813, 25095), (1195, 17073), (1355, 15057), (1673, 12195), (1897, 10755), (2151, 9485), (2439, 8365), (3585, 5691), (4065, 5019)]