21086624

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{293}}^1$

素因数の和:489

約数の個数: 48

約数和(自身を含む): 45119592

約数和(自身を除く): 24032968

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 173, 208, 293, 346, 416, 586, 692, 1172, 1384, 2249, 2344, 2768, 3809, 4498, 4688, 5536, 7618, 8996, 9376, 15236, 17992, 30472, 35984, 50689, 60944, 71968, 101378, 121888, 202756, 405512, 658957, 811024, 1317914, 1622048, 2635828, 5271656, 10543312, 21086624]

約数ペア:

[(1, 21086624), (2, 10543312), (4, 5271656), (8, 2635828), (13, 1622048), (16, 1317914), (26, 811024), (32, 658957), (52, 405512), (104, 202756), (173, 121888), (208, 101378), (293, 71968), (346, 60944), (416, 50689), (586, 35984), (692, 30472), (1172, 17992), (1384, 15236), (2249, 9376), (2344, 8996), (2768, 7618), (3809, 5536), (4498, 4688)]