20181427220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3389}}^1\times {\mathrm{15671}}^1$

素因数の和:19088

約数の個数: 48

約数和(自身を含む): 44627587200

約数和(自身を除く): 24446159980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 3389, 6778, 13556, 15671, 16945, 31342, 33890, 62684, 64391, 67780, 78355, 128782, 156710, 257564, 297749, 313420, 321955, 595498, 643910, 1190996, 1287820, 1488745, 2977490, 5954980, 53109019, 106218038, 212436076, 265545095, 531090190, 1009071361, 1062180380, 2018142722, 4036285444, 5045356805, 10090713610, 20181427220]

約数ペア:

[(1, 20181427220), (2, 10090713610), (4, 5045356805), (5, 4036285444), (10, 2018142722), (19, 1062180380), (20, 1009071361), (38, 531090190), (76, 265545095), (95, 212436076), (190, 106218038), (380, 53109019), (3389, 5954980), (6778, 2977490), (13556, 1488745), (15671, 1287820), (16945, 1190996), (31342, 643910), (33890, 595498), (62684, 321955), (64391, 313420), (67780, 297749), (78355, 257564), (128782, 156710)]