18513315

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{367}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 34444800

約数和(自身を除く): 15931485

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 59, 95, 171, 177, 285, 295, 367, 531, 855, 885, 1101, 1121, 1835, 2655, 3303, 3363, 5505, 5605, 6973, 10089, 16515, 16815, 20919, 21653, 34865, 50445, 62757, 64959, 104595, 108265, 194877, 313785, 324795, 411407, 974385, 1234221, 2057035, 3702663, 6171105, 18513315]

約数ペア:

[(1, 18513315), (3, 6171105), (5, 3702663), (9, 2057035), (15, 1234221), (19, 974385), (45, 411407), (57, 324795), (59, 313785), (95, 194877), (171, 108265), (177, 104595), (285, 64959), (295, 62757), (367, 50445), (531, 34865), (855, 21653), (885, 20919), (1101, 16815), (1121, 16515), (1835, 10089), (2655, 6973), (3303, 5605), (3363, 5505)]