28891278

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{397}}^1$

素因数の和:729

約数の個数: 48

約数和(自身を含む): 67800096

約数和(自身を除く): 38908818

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 311, 397, 622, 794, 933, 1191, 1866, 2382, 2799, 3573, 4043, 5161, 5598, 7146, 8086, 10322, 12129, 15483, 24258, 30966, 36387, 46449, 72774, 92898, 123467, 246934, 370401, 740802, 1111203, 1605071, 2222406, 3210142, 4815213, 9630426, 14445639, 28891278]

約数ペア:

[(1, 28891278), (2, 14445639), (3, 9630426), (6, 4815213), (9, 3210142), (13, 2222406), (18, 1605071), (26, 1111203), (39, 740802), (78, 370401), (117, 246934), (234, 123467), (311, 92898), (397, 72774), (622, 46449), (794, 36387), (933, 30966), (1191, 24258), (1866, 15483), (2382, 12129), (2799, 10322), (3573, 8086), (4043, 7146), (5161, 5598)]