18945045

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{439}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 37889280

約数和(自身を除く): 18944235

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 137, 315, 411, 439, 685, 959, 1233, 1317, 2055, 2195, 2877, 3073, 3951, 4795, 6165, 6585, 8631, 9219, 14385, 15365, 19755, 27657, 43155, 46095, 60143, 138285, 180429, 300715, 421001, 541287, 902145, 1263003, 2105005, 2706435, 3789009, 6315015, 18945045]

約数ペア:

[(1, 18945045), (3, 6315015), (5, 3789009), (7, 2706435), (9, 2105005), (15, 1263003), (21, 902145), (35, 541287), (45, 421001), (63, 300715), (105, 180429), (137, 138285), (315, 60143), (411, 46095), (439, 43155), (685, 27657), (959, 19755), (1233, 15365), (1317, 14385), (2055, 9219), (2195, 8631), (2877, 6585), (3073, 6165), (3951, 4795)]