20108925

素因数分解:

$3^3\times 5^2\times {\mathrm{31}}^3$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 38172160

約数和(自身を除く): 18063235

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 93, 135, 155, 225, 279, 465, 675, 775, 837, 961, 1395, 2325, 2883, 4185, 4805, 6975, 8649, 14415, 20925, 24025, 25947, 29791, 43245, 72075, 89373, 129735, 148955, 216225, 268119, 446865, 648675, 744775, 804357, 1340595, 2234325, 4021785, 6702975, 20108925]

約数ペア:

[(1, 20108925), (3, 6702975), (5, 4021785), (9, 2234325), (15, 1340595), (25, 804357), (27, 744775), (31, 648675), (45, 446865), (75, 268119), (93, 216225), (135, 148955), (155, 129735), (225, 89373), (279, 72075), (465, 43245), (675, 29791), (775, 25947), (837, 24025), (961, 20925), (1395, 14415), (2325, 8649), (2883, 6975), (4185, 4805)]