21000304870

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{761}}^1\times {\mathrm{19853}}^1$

素因数の和:20760

約数の個数: 32

約数和(自身を含む): 38124444960

約数和(自身を除く): 17124140090

約数列:

[1, 2, 5, 10, 139, 278, 695, 761, 1390, 1522, 3805, 7610, 19853, 39706, 99265, 105779, 198530, 211558, 528895, 1057790, 2759567, 5519134, 13797835, 15108133, 27595670, 30216266, 75540665, 151081330, 2100030487, 4200060974, 10500152435, 21000304870]

約数ペア:

[(1, 21000304870), (2, 10500152435), (5, 4200060974), (10, 2100030487), (139, 151081330), (278, 75540665), (695, 30216266), (761, 27595670), (1390, 15108133), (1522, 13797835), (3805, 5519134), (7610, 2759567), (19853, 1057790), (39706, 528895), (99265, 211558), (105779, 198530)]