20511200

素因数分解:

$2^5\times 5^2\times {\mathrm{25639}}^1$

素因数の和:25659

約数の個数: 36

約数和(自身を含む): 50074920

約数和(自身を除く): 29563720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25639, 51278, 102556, 128195, 205112, 256390, 410224, 512780, 640975, 820448, 1025560, 1281950, 2051120, 2563900, 4102240, 5127800, 10255600, 20511200]

約数ペア:

[(1, 20511200), (2, 10255600), (4, 5127800), (5, 4102240), (8, 2563900), (10, 2051120), (16, 1281950), (20, 1025560), (25, 820448), (32, 640975), (40, 512780), (50, 410224), (80, 256390), (100, 205112), (160, 128195), (200, 102556), (400, 51278), (800, 25639)]