20328400

素因数分解:

$2^4\times 5^2\times {\mathrm{50821}}^1$

素因数の和:50839

約数の個数: 30

約数和(自身を含む): 48839942

約数和(自身を除く): 28511542

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 50821, 101642, 203284, 254105, 406568, 508210, 813136, 1016420, 1270525, 2032840, 2541050, 4065680, 5082100, 10164200, 20328400]

約数ペア:

[(1, 20328400), (2, 10164200), (4, 5082100), (5, 4065680), (8, 2541050), (10, 2032840), (16, 1270525), (20, 1016420), (25, 813136), (40, 508210), (50, 406568), (80, 254105), (100, 203284), (200, 101642), (400, 50821)]