21763760

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1669}}^1$

素因数の和:1845

約数の個数: 40

約数和(自身を含む): 50941680

約数和(自身を除く): 29177920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 1669, 2608, 3260, 3338, 6520, 6676, 8345, 13040, 13352, 16690, 26704, 33380, 66760, 133520, 272047, 544094, 1088188, 1360235, 2176376, 2720470, 4352752, 5440940, 10881880, 21763760]

約数ペア:

[(1, 21763760), (2, 10881880), (4, 5440940), (5, 4352752), (8, 2720470), (10, 2176376), (16, 1360235), (20, 1088188), (40, 544094), (80, 272047), (163, 133520), (326, 66760), (652, 33380), (815, 26704), (1304, 16690), (1630, 13352), (1669, 13040), (2608, 8345), (3260, 6676), (3338, 6520)]