20138391

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 36434944

約数和(自身を除く): 16296553

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 67, 91, 117, 201, 273, 367, 469, 603, 819, 871, 1101, 1407, 2569, 2613, 3303, 4221, 4771, 6097, 7707, 7839, 14313, 18291, 23121, 24589, 33397, 42939, 54873, 73767, 100191, 172123, 221301, 300573, 319657, 516369, 958971, 1549107, 2237599, 2876913, 6712797, 20138391]

約数ペア:

[(1, 20138391), (3, 6712797), (7, 2876913), (9, 2237599), (13, 1549107), (21, 958971), (39, 516369), (63, 319657), (67, 300573), (91, 221301), (117, 172123), (201, 100191), (273, 73767), (367, 54873), (469, 42939), (603, 33397), (819, 24589), (871, 23121), (1101, 18291), (1407, 14313), (2569, 7839), (2613, 7707), (3303, 6097), (4221, 4771)]