21685678

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1723}}^1$

素因数の和:1792

約数の個数: 32

約数和(自身を含む): 39720960

約数和(自身を除く): 18035282

約数列:

[1, 2, 7, 14, 29, 31, 58, 62, 203, 217, 406, 434, 899, 1723, 1798, 3446, 6293, 12061, 12586, 24122, 49967, 53413, 99934, 106826, 349769, 373891, 699538, 747782, 1548977, 3097954, 10842839, 21685678]

約数ペア:

[(1, 21685678), (2, 10842839), (7, 3097954), (14, 1548977), (29, 747782), (31, 699538), (58, 373891), (62, 349769), (203, 106826), (217, 99934), (406, 53413), (434, 49967), (899, 24122), (1723, 12586), (1798, 12061), (3446, 6293)]