18818793

素因数分解:

$3^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:466

約数の個数: 36

約数和(自身を含む): 31951920

約数和(自身を除く): 13133127

約数列:

[1, 3, 7, 9, 21, 49, 63, 139, 147, 307, 417, 441, 921, 973, 1251, 2149, 2763, 2919, 6447, 6811, 8757, 15043, 19341, 20433, 42673, 45129, 61299, 128019, 135387, 298711, 384057, 896133, 2090977, 2688399, 6272931, 18818793]

約数ペア:

[(1, 18818793), (3, 6272931), (7, 2688399), (9, 2090977), (21, 896133), (49, 384057), (63, 298711), (139, 135387), (147, 128019), (307, 61299), (417, 45129), (441, 42673), (921, 20433), (973, 19341), (1251, 15043), (2149, 8757), (2763, 6811), (2919, 6447)]