19691440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14479}}^1$

素因数の和:14509

約数の個数: 40

約数和(自身を含む): 48479040

約数和(自身を除く): 28787600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14479, 28958, 57916, 72395, 115832, 144790, 231664, 246143, 289580, 492286, 579160, 984572, 1158320, 1230715, 1969144, 2461430, 3938288, 4922860, 9845720, 19691440]

約数ペア:

[(1, 19691440), (2, 9845720), (4, 4922860), (5, 3938288), (8, 2461430), (10, 1969144), (16, 1230715), (17, 1158320), (20, 984572), (34, 579160), (40, 492286), (68, 289580), (80, 246143), (85, 231664), (136, 144790), (170, 115832), (272, 72395), (340, 57916), (680, 28958), (1360, 14479)]