19745325

素因数分解:

$3^2\times 5^2\times {\mathrm{127}}^1\times {\mathrm{691}}^1$

素因数の和:834

約数の個数: 36

約数和(自身を含む): 35696128

約数和(自身を除く): 15950803

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 127, 225, 381, 635, 691, 1143, 1905, 2073, 3175, 3455, 5715, 6219, 9525, 10365, 17275, 28575, 31095, 51825, 87757, 155475, 263271, 438785, 789813, 1316355, 2193925, 3949065, 6581775, 19745325]

約数ペア:

[(1, 19745325), (3, 6581775), (5, 3949065), (9, 2193925), (15, 1316355), (25, 789813), (45, 438785), (75, 263271), (127, 155475), (225, 87757), (381, 51825), (635, 31095), (691, 28575), (1143, 17275), (1905, 10365), (2073, 9525), (3175, 6219), (3455, 5715)]