21681632

素因数分解:

$2^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2251}}^1$

素因数の和:2311

約数の個数: 48

約数和(自身を含む): 49940352

約数和(自身を除く): 28258720

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 86, 112, 172, 224, 301, 344, 602, 688, 1204, 1376, 2251, 2408, 4502, 4816, 9004, 9632, 15757, 18008, 31514, 36016, 63028, 72032, 96793, 126056, 193586, 252112, 387172, 504224, 677551, 774344, 1355102, 1548688, 2710204, 3097376, 5420408, 10840816, 21681632]

約数ペア:

[(1, 21681632), (2, 10840816), (4, 5420408), (7, 3097376), (8, 2710204), (14, 1548688), (16, 1355102), (28, 774344), (32, 677551), (43, 504224), (56, 387172), (86, 252112), (112, 193586), (172, 126056), (224, 96793), (301, 72032), (344, 63028), (602, 36016), (688, 31514), (1204, 18008), (1376, 15757), (2251, 9632), (2408, 9004), (4502, 4816)]