21536528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2203}}^1$

素因数の和:2271

約数の個数: 40

約数和(自身を含む): 45913728

約数和(自身を除く): 24377200

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2203, 2444, 4406, 4888, 8812, 9776, 17624, 28639, 35248, 57278, 103541, 114556, 207082, 229112, 414164, 458224, 828328, 1346033, 1656656, 2692066, 5384132, 10768264, 21536528]

約数ペア:

[(1, 21536528), (2, 10768264), (4, 5384132), (8, 2692066), (13, 1656656), (16, 1346033), (26, 828328), (47, 458224), (52, 414164), (94, 229112), (104, 207082), (188, 114556), (208, 103541), (376, 57278), (611, 35248), (752, 28639), (1222, 17624), (2203, 9776), (2444, 8812), (4406, 4888)]