21978560

素因数分解:

$2^6\times 5^1\times {\mathrm{68683}}^1$

素因数の和:68700

約数の個数: 28

約数和(自身を含む): 52337208

約数和(自身を除く): 30358648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68683, 137366, 274732, 343415, 549464, 686830, 1098928, 1373660, 2197856, 2747320, 4395712, 5494640, 10989280, 21978560]

約数ペア:

[(1, 21978560), (2, 10989280), (4, 5494640), (5, 4395712), (8, 2747320), (10, 2197856), (16, 1373660), (20, 1098928), (32, 686830), (40, 549464), (64, 343415), (80, 274732), (160, 137366), (320, 68683)]