21541760

素因数分解:

$2^7\times 5^1\times {\mathrm{97}}^1\times {\mathrm{347}}^1$

素因数の和:463

約数の個数: 64

約数和(自身を含む): 52179120

約数和(自身を除く): 30637360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 160, 194, 320, 347, 388, 485, 640, 694, 776, 970, 1388, 1552, 1735, 1940, 2776, 3104, 3470, 3880, 5552, 6208, 6940, 7760, 11104, 12416, 13880, 15520, 22208, 27760, 31040, 33659, 44416, 55520, 62080, 67318, 111040, 134636, 168295, 222080, 269272, 336590, 538544, 673180, 1077088, 1346360, 2154176, 2692720, 4308352, 5385440, 10770880, 21541760]

約数ペア:

[(1, 21541760), (2, 10770880), (4, 5385440), (5, 4308352), (8, 2692720), (10, 2154176), (16, 1346360), (20, 1077088), (32, 673180), (40, 538544), (64, 336590), (80, 269272), (97, 222080), (128, 168295), (160, 134636), (194, 111040), (320, 67318), (347, 62080), (388, 55520), (485, 44416), (640, 33659), (694, 31040), (776, 27760), (970, 22208), (1388, 15520), (1552, 13880), (1735, 12416), (1940, 11104), (2776, 7760), (3104, 6940), (3470, 6208), (3880, 5552)]