21907984

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4549}}^1$

素因数の和:4607

約数の個数: 40

約数和(自身を含む): 49649600

約数和(自身を除く): 27741616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4549, 4816, 9098, 18196, 31843, 36392, 63686, 72784, 127372, 195607, 254744, 391214, 509488, 782428, 1369249, 1564856, 2738498, 3129712, 5476996, 10953992, 21907984]

約数ペア:

[(1, 21907984), (2, 10953992), (4, 5476996), (7, 3129712), (8, 2738498), (14, 1564856), (16, 1369249), (28, 782428), (43, 509488), (56, 391214), (86, 254744), (112, 195607), (172, 127372), (301, 72784), (344, 63686), (602, 36392), (688, 31843), (1204, 18196), (2408, 9098), (4549, 4816)]