21018704

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2801}}^1$

素因数の和:2883

約数の個数: 40

約数和(自身を含む): 47252928

約数和(自身を除く): 26234224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1072, 1876, 2801, 3752, 5602, 7504, 11204, 19607, 22408, 39214, 44816, 78428, 156856, 187667, 313712, 375334, 750668, 1313669, 1501336, 2627338, 3002672, 5254676, 10509352, 21018704]

約数ペア:

[(1, 21018704), (2, 10509352), (4, 5254676), (7, 3002672), (8, 2627338), (14, 1501336), (16, 1313669), (28, 750668), (56, 375334), (67, 313712), (112, 187667), (134, 156856), (268, 78428), (469, 44816), (536, 39214), (938, 22408), (1072, 19607), (1876, 11204), (2801, 7504), (3752, 5602)]