21475755

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{863}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 43130880

約数和(自身を除く): 21655125

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 79, 105, 237, 315, 395, 553, 711, 863, 1185, 1659, 2589, 2765, 3555, 4315, 4977, 6041, 7767, 8295, 12945, 18123, 24885, 30205, 38835, 54369, 68177, 90615, 204531, 271845, 340885, 477239, 613593, 1022655, 1431717, 2386195, 3067965, 4295151, 7158585, 21475755]

約数ペア:

[(1, 21475755), (3, 7158585), (5, 4295151), (7, 3067965), (9, 2386195), (15, 1431717), (21, 1022655), (35, 613593), (45, 477239), (63, 340885), (79, 271845), (105, 204531), (237, 90615), (315, 68177), (395, 54369), (553, 38835), (711, 30205), (863, 24885), (1185, 18123), (1659, 12945), (2589, 8295), (2765, 7767), (3555, 6041), (4315, 4977)]