25620420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61001}}^1$

素因数の和:61020

約数の個数: 48

約数和(自身を含む): 81986688

約数和(自身を除く): 56366268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 61001, 122002, 183003, 244004, 305005, 366006, 427007, 610010, 732012, 854014, 915015, 1220020, 1281021, 1708028, 1830030, 2135035, 2562042, 3660060, 4270070, 5124084, 6405105, 8540140, 12810210, 25620420]

約数ペア:

[(1, 25620420), (2, 12810210), (3, 8540140), (4, 6405105), (5, 5124084), (6, 4270070), (7, 3660060), (10, 2562042), (12, 2135035), (14, 1830030), (15, 1708028), (20, 1281021), (21, 1220020), (28, 915015), (30, 854014), (35, 732012), (42, 610010), (60, 427007), (70, 366006), (84, 305005), (105, 244004), (140, 183003), (210, 122002), (420, 61001)]