19666395

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{991}}^1$

素因数の和:1022

約数の個数: 60

約数和(自身を含む): 41050944

約数和(自身を除く): 21384549

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 991, 1323, 2205, 2835, 2973, 3969, 4955, 6615, 6937, 8919, 14865, 19845, 20811, 26757, 34685, 44595, 48559, 62433, 80271, 104055, 133785, 145677, 187299, 242795, 312165, 401355, 437031, 561897, 728385, 936495, 1311093, 2185155, 2809485, 3933279, 6555465, 19666395]

約数ペア:

[(1, 19666395), (3, 6555465), (5, 3933279), (7, 2809485), (9, 2185155), (15, 1311093), (21, 936495), (27, 728385), (35, 561897), (45, 437031), (49, 401355), (63, 312165), (81, 242795), (105, 187299), (135, 145677), (147, 133785), (189, 104055), (245, 80271), (315, 62433), (405, 48559), (441, 44595), (567, 34685), (735, 26757), (945, 20811), (991, 19845), (1323, 14865), (2205, 8919), (2835, 6937), (2973, 6615), (3969, 4955)]