21813760

素因数分解:

$2^9\times 5^1\times {\mathrm{8521}}^1$

素因数の和:8544

約数の個数: 40

約数和(自身を含む): 52308036

約数和(自身を除く): 30494276

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8521, 17042, 34084, 42605, 68168, 85210, 136336, 170420, 272672, 340840, 545344, 681680, 1090688, 1363360, 2181376, 2726720, 4362752, 5453440, 10906880, 21813760]

約数ペア:

[(1, 21813760), (2, 10906880), (4, 5453440), (5, 4362752), (8, 2726720), (10, 2181376), (16, 1363360), (20, 1090688), (32, 681680), (40, 545344), (64, 340840), (80, 272672), (128, 170420), (160, 136336), (256, 85210), (320, 68168), (512, 42605), (640, 34084), (1280, 17042), (2560, 8521)]