19640577

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 30007296

約数和(自身を除く): 10366719

約数列:

[1, 3, 11, 31, 33, 73, 93, 219, 263, 341, 789, 803, 1023, 2263, 2409, 2893, 6789, 8153, 8679, 19199, 24459, 24893, 57597, 74679, 89683, 211189, 269049, 595169, 633567, 1785507, 6546859, 19640577]

約数ペア:

[(1, 19640577), (3, 6546859), (11, 1785507), (31, 633567), (33, 595169), (73, 269049), (93, 211189), (219, 89683), (263, 74679), (341, 57597), (789, 24893), (803, 24459), (1023, 19199), (2263, 8679), (2409, 8153), (2893, 6789)]