20038473

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 36516480

約数和(自身を除く): 16478007

約数列:

[1, 3, 7, 9, 13, 21, 39, 43, 63, 91, 117, 129, 273, 301, 387, 559, 569, 819, 903, 1677, 1707, 2709, 3913, 3983, 5031, 5121, 7397, 11739, 11949, 22191, 24467, 35217, 35847, 51779, 66573, 73401, 155337, 171269, 220203, 318071, 466011, 513807, 954213, 1541421, 2226497, 2862639, 6679491, 20038473]

約数ペア:

[(1, 20038473), (3, 6679491), (7, 2862639), (9, 2226497), (13, 1541421), (21, 954213), (39, 513807), (43, 466011), (63, 318071), (91, 220203), (117, 171269), (129, 155337), (273, 73401), (301, 66573), (387, 51779), (559, 35847), (569, 35217), (819, 24467), (903, 22191), (1677, 11949), (1707, 11739), (2709, 7397), (3913, 5121), (3983, 5031)]