15556720

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1193}}^1$

素因数の和:1369

約数の個数: 40

約数和(自身を含む): 36421776

約数和(自身を除く): 20865056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1193, 1304, 1630, 2386, 2608, 3260, 4772, 5965, 6520, 9544, 11930, 13040, 19088, 23860, 47720, 95440, 194459, 388918, 777836, 972295, 1555672, 1944590, 3111344, 3889180, 7778360, 15556720]

約数ペア:

[(1, 15556720), (2, 7778360), (4, 3889180), (5, 3111344), (8, 1944590), (10, 1555672), (16, 972295), (20, 777836), (40, 388918), (80, 194459), (163, 95440), (326, 47720), (652, 23860), (815, 19088), (1193, 13040), (1304, 11930), (1630, 9544), (2386, 6520), (2608, 5965), (3260, 4772)]