20448675

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6991}}^1$

素因数の和:7020

約数の個数: 36

約数和(自身を含む): 39448864

約数和(自身を除く): 19000189

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6991, 20973, 34955, 62919, 90883, 104865, 174775, 272649, 314595, 454415, 524325, 817947, 1363245, 1572975, 2272075, 4089735, 6816225, 20448675]

約数ペア:

[(1, 20448675), (3, 6816225), (5, 4089735), (9, 2272075), (13, 1572975), (15, 1363245), (25, 817947), (39, 524325), (45, 454415), (65, 314595), (75, 272649), (117, 174775), (195, 104865), (225, 90883), (325, 62919), (585, 34955), (975, 20973), (2925, 6991)]