19964805

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1181}}^1$

素因数の和:1226

約数の個数: 48

約数和(自身を含む): 38807424

約数和(自身を除く): 18842619

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 49, 69, 105, 115, 147, 161, 245, 345, 483, 735, 805, 1127, 1181, 2415, 3381, 3543, 5635, 5905, 8267, 16905, 17715, 24801, 27163, 41335, 57869, 81489, 124005, 135815, 173607, 190141, 289345, 407445, 570423, 868035, 950705, 1330987, 2852115, 3992961, 6654935, 19964805]

約数ペア:

[(1, 19964805), (3, 6654935), (5, 3992961), (7, 2852115), (15, 1330987), (21, 950705), (23, 868035), (35, 570423), (49, 407445), (69, 289345), (105, 190141), (115, 173607), (147, 135815), (161, 124005), (245, 81489), (345, 57869), (483, 41335), (735, 27163), (805, 24801), (1127, 17715), (1181, 16905), (2415, 8267), (3381, 5905), (3543, 5635)]