21301413

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{271}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 13166427

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 271, 399, 591, 813, 1379, 1897, 3743, 4137, 5149, 5691, 11229, 15447, 26201, 36043, 53387, 78603, 108129, 160161, 373709, 1014353, 1121127, 3043059, 7100471, 21301413]

約数ペア:

[(1, 21301413), (3, 7100471), (7, 3043059), (19, 1121127), (21, 1014353), (57, 373709), (133, 160161), (197, 108129), (271, 78603), (399, 53387), (591, 36043), (813, 26201), (1379, 15447), (1897, 11229), (3743, 5691), (4137, 5149)]