20903316

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{8581}}^1$

素因数の和:8624

約数の個数: 48

約数和(自身を含む): 57671040

約数和(自身を除く): 36767724

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 42, 58, 84, 87, 116, 174, 203, 348, 406, 609, 812, 1218, 2436, 8581, 17162, 25743, 34324, 51486, 60067, 102972, 120134, 180201, 240268, 248849, 360402, 497698, 720804, 746547, 995396, 1493094, 1741943, 2986188, 3483886, 5225829, 6967772, 10451658, 20903316]

約数ペア:

[(1, 20903316), (2, 10451658), (3, 6967772), (4, 5225829), (6, 3483886), (7, 2986188), (12, 1741943), (14, 1493094), (21, 995396), (28, 746547), (29, 720804), (42, 497698), (58, 360402), (84, 248849), (87, 240268), (116, 180201), (174, 120134), (203, 102972), (348, 60067), (406, 51486), (609, 34324), (812, 25743), (1218, 17162), (2436, 8581)]