20486720

素因数分解:

$2^6\times 5^1\times {\mathrm{73}}^1\times {\mathrm{877}}^1$

素因数の和:967

約数の個数: 56

約数和(自身を含む): 49508664

約数和(自身を除く): 29021944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 146, 160, 292, 320, 365, 584, 730, 877, 1168, 1460, 1754, 2336, 2920, 3508, 4385, 4672, 5840, 7016, 8770, 11680, 14032, 17540, 23360, 28064, 35080, 56128, 64021, 70160, 128042, 140320, 256084, 280640, 320105, 512168, 640210, 1024336, 1280420, 2048672, 2560840, 4097344, 5121680, 10243360, 20486720]

約数ペア:

[(1, 20486720), (2, 10243360), (4, 5121680), (5, 4097344), (8, 2560840), (10, 2048672), (16, 1280420), (20, 1024336), (32, 640210), (40, 512168), (64, 320105), (73, 280640), (80, 256084), (146, 140320), (160, 128042), (292, 70160), (320, 64021), (365, 56128), (584, 35080), (730, 28064), (877, 23360), (1168, 17540), (1460, 14032), (1754, 11680), (2336, 8770), (2920, 7016), (3508, 5840), (4385, 4672)]