25221455

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 15421105

約数列:

[1, 5, 7, 17, 19, 23, 35, 85, 95, 97, 115, 119, 133, 161, 323, 391, 437, 485, 595, 665, 679, 805, 1615, 1649, 1843, 1955, 2185, 2231, 2261, 2737, 3059, 3395, 7429, 8245, 9215, 11155, 11305, 11543, 12901, 13685, 15295, 15617, 31331, 37145, 37927, 42389, 52003, 57715, 64505, 78085, 156655, 189635, 211945, 219317, 260015, 265489, 296723, 720613, 1096585, 1327445, 1483615, 3603065, 5044291, 25221455]

約数ペア:

[(1, 25221455), (5, 5044291), (7, 3603065), (17, 1483615), (19, 1327445), (23, 1096585), (35, 720613), (85, 296723), (95, 265489), (97, 260015), (115, 219317), (119, 211945), (133, 189635), (161, 156655), (323, 78085), (391, 64505), (437, 57715), (485, 52003), (595, 42389), (665, 37927), (679, 37145), (805, 31331), (1615, 15617), (1649, 15295), (1843, 13685), (1955, 12901), (2185, 11543), (2231, 11305), (2261, 11155), (2737, 9215), (3059, 8245), (3395, 7429)]