21786880

素因数分解:

$2^8\times 5^1\times {\mathrm{17021}}^1$

素因数の和:17042

約数の個数: 36

約数和(自身を含む): 52189452

約数和(自身を除く): 30402572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 17021, 34042, 68084, 85105, 136168, 170210, 272336, 340420, 544672, 680840, 1089344, 1361680, 2178688, 2723360, 4357376, 5446720, 10893440, 21786880]

約数ペア:

[(1, 21786880), (2, 10893440), (4, 5446720), (5, 4357376), (8, 2723360), (10, 2178688), (16, 1361680), (20, 1089344), (32, 680840), (40, 544672), (64, 340420), (80, 272336), (128, 170210), (160, 136168), (256, 85105), (320, 68084), (640, 34042), (1280, 17021)]