19804252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 40515552

約数和(自身を除く): 20711300

約数列:

[1, 2, 4, 13, 17, 26, 34, 43, 52, 68, 86, 172, 221, 442, 521, 559, 731, 884, 1042, 1118, 1462, 2084, 2236, 2924, 6773, 8857, 9503, 13546, 17714, 19006, 22403, 27092, 35428, 38012, 44806, 89612, 115141, 230282, 291239, 380851, 460564, 582478, 761702, 1164956, 1523404, 4951063, 9902126, 19804252]

約数ペア:

[(1, 19804252), (2, 9902126), (4, 4951063), (13, 1523404), (17, 1164956), (26, 761702), (34, 582478), (43, 460564), (52, 380851), (68, 291239), (86, 230282), (172, 115141), (221, 89612), (442, 44806), (521, 38012), (559, 35428), (731, 27092), (884, 22403), (1042, 19006), (1118, 17714), (1462, 13546), (2084, 9503), (2236, 8857), (2924, 6773)]