20178896

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:471

約数の個数: 40

約数和(自身を含む): 40849320

約数和(自身を除く): 20670424

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 157, 232, 277, 314, 464, 554, 628, 1108, 1256, 2216, 2512, 4432, 4553, 8033, 9106, 16066, 18212, 32132, 36424, 43489, 64264, 72848, 86978, 128528, 173956, 347912, 695824, 1261181, 2522362, 5044724, 10089448, 20178896]

約数ペア:

[(1, 20178896), (2, 10089448), (4, 5044724), (8, 2522362), (16, 1261181), (29, 695824), (58, 347912), (116, 173956), (157, 128528), (232, 86978), (277, 72848), (314, 64264), (464, 43489), (554, 36424), (628, 32132), (1108, 18212), (1256, 16066), (2216, 9106), (2512, 8033), (4432, 4553)]