21709325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{887}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 29730240

約数和(自身を除く): 8020915

約数列:

[1, 5, 11, 25, 55, 89, 275, 445, 887, 979, 2225, 4435, 4895, 9757, 22175, 24475, 48785, 78943, 243925, 394715, 868373, 1973575, 4341865, 21709325]

約数ペア:

[(1, 21709325), (5, 4341865), (11, 1973575), (25, 868373), (55, 394715), (89, 243925), (275, 78943), (445, 48785), (887, 24475), (979, 22175), (2225, 9757), (4435, 4895)]