21153172

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{353}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 37824192

約数和(自身を除く): 16671020

約数列:

[1, 2, 4, 71, 142, 211, 284, 353, 422, 706, 844, 1412, 14981, 25063, 29962, 50126, 59924, 74483, 100252, 148966, 297932, 5288293, 10576586, 21153172]

約数ペア:

[(1, 21153172), (2, 10576586), (4, 5288293), (71, 297932), (142, 148966), (211, 100252), (284, 74483), (353, 59924), (422, 50126), (706, 29962), (844, 25063), (1412, 14981)]