21271107

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{277}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 33626880

約数和(自身を除く): 12355773

約数列:

[1, 3, 11, 13, 33, 39, 143, 179, 277, 429, 537, 831, 1969, 2327, 3047, 3601, 5907, 6981, 9141, 10803, 25597, 39611, 49583, 76791, 118833, 148749, 545413, 644579, 1636239, 1933737, 7090369, 21271107]

約数ペア:

[(1, 21271107), (3, 7090369), (11, 1933737), (13, 1636239), (33, 644579), (39, 545413), (143, 148749), (179, 118833), (277, 76791), (429, 49583), (537, 39611), (831, 25597), (1969, 10803), (2327, 9141), (3047, 6981), (3601, 5907)]