20921152017

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{257837}}^1$

素因数の和:257937

約数の個数: 32

約数和(自身を含む): 31039569792

約数和(自身を除く): 10118417775

約数列:

[1, 3, 17, 37, 43, 51, 111, 129, 629, 731, 1591, 1887, 2193, 4773, 27047, 81141, 257837, 773511, 4383229, 9539969, 11086991, 13149687, 28619907, 33260973, 162179473, 188478847, 410218667, 486538419, 565436541, 1230656001, 6973717339, 20921152017]

約数ペア:

[(1, 20921152017), (3, 6973717339), (17, 1230656001), (37, 565436541), (43, 486538419), (51, 410218667), (111, 188478847), (129, 162179473), (629, 33260973), (731, 28619907), (1591, 13149687), (1887, 11086991), (2193, 9539969), (4773, 4383229), (27047, 773511), (81141, 257837)]