21552760

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7589}}^1$

素因数の和:7671

約数の個数: 32

約数和(自身を含む): 49183200

約数和(自身を除く): 27630440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7589, 15178, 30356, 37945, 60712, 75890, 151780, 303560, 538819, 1077638, 2155276, 2694095, 4310552, 5388190, 10776380, 21552760]

約数ペア:

[(1, 21552760), (2, 10776380), (4, 5388190), (5, 4310552), (8, 2694095), (10, 2155276), (20, 1077638), (40, 538819), (71, 303560), (142, 151780), (284, 75890), (355, 60712), (568, 37945), (710, 30356), (1420, 15178), (2840, 7589)]