204595840

素因数分解:

$2^7\times 5^1\times {\mathrm{319681}}^1$

素因数の和:319700

約数の個数: 32

約数和(自身を含む): 489113460

約数和(自身を除く): 284517620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 319681, 639362, 1278724, 1598405, 2557448, 3196810, 5114896, 6393620, 10229792, 12787240, 20459584, 25574480, 40919168, 51148960, 102297920, 204595840]

約数ペア:

[(1, 204595840), (2, 102297920), (4, 51148960), (5, 40919168), (8, 25574480), (10, 20459584), (16, 12787240), (20, 10229792), (32, 6393620), (40, 5114896), (64, 3196810), (80, 2557448), (128, 1598405), (160, 1278724), (320, 639362), (640, 319681)]