19990827

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{449}}^1$

素因数の和:572

約数の個数: 32

約数和(自身を含む): 31752000

約数和(自身を除く): 11761173

約数列:

[1, 3, 9, 17, 27, 51, 97, 153, 291, 449, 459, 873, 1347, 1649, 2619, 4041, 4947, 7633, 12123, 14841, 22899, 43553, 44523, 68697, 130659, 206091, 391977, 740401, 1175931, 2221203, 6663609, 19990827]

約数ペア:

[(1, 19990827), (3, 6663609), (9, 2221203), (17, 1175931), (27, 740401), (51, 391977), (97, 206091), (153, 130659), (291, 68697), (449, 44523), (459, 43553), (873, 22899), (1347, 14841), (1649, 12123), (2619, 7633), (4041, 4947)]