20014960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{347}}^1$

素因数の和:470

約数の個数: 80

約数和(自身を含む): 53853696

約数和(自身を除く): 33838736

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 103, 112, 140, 206, 280, 347, 412, 515, 560, 694, 721, 824, 1030, 1388, 1442, 1648, 1735, 2060, 2429, 2776, 2884, 3470, 3605, 4120, 4858, 5552, 5768, 6940, 7210, 8240, 9716, 11536, 12145, 13880, 14420, 19432, 24290, 27760, 28840, 35741, 38864, 48580, 57680, 71482, 97160, 142964, 178705, 194320, 250187, 285928, 357410, 500374, 571856, 714820, 1000748, 1250935, 1429640, 2001496, 2501870, 2859280, 4002992, 5003740, 10007480, 20014960]

約数ペア:

[(1, 20014960), (2, 10007480), (4, 5003740), (5, 4002992), (7, 2859280), (8, 2501870), (10, 2001496), (14, 1429640), (16, 1250935), (20, 1000748), (28, 714820), (35, 571856), (40, 500374), (56, 357410), (70, 285928), (80, 250187), (103, 194320), (112, 178705), (140, 142964), (206, 97160), (280, 71482), (347, 57680), (412, 48580), (515, 38864), (560, 35741), (694, 28840), (721, 27760), (824, 24290), (1030, 19432), (1388, 14420), (1442, 13880), (1648, 12145), (1735, 11536), (2060, 9716), (2429, 8240), (2776, 7210), (2884, 6940), (3470, 5768), (3605, 5552), (4120, 4858)]