19200225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^2$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 37685088

約数和(自身を除く): 18484863

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 37, 51, 55, 75, 85, 111, 165, 185, 187, 255, 275, 407, 425, 555, 561, 629, 825, 925, 935, 1221, 1275, 1369, 1887, 2035, 2775, 2805, 3145, 4107, 4675, 6105, 6845, 6919, 9435, 10175, 14025, 15059, 15725, 20535, 20757, 23273, 30525, 34225, 34595, 45177, 47175, 69819, 75295, 102675, 103785, 116365, 172975, 225885, 256003, 349095, 376475, 518925, 581825, 768009, 1129425, 1280015, 1745475, 3840045, 6400075, 19200225]

約数ペア:

[(1, 19200225), (3, 6400075), (5, 3840045), (11, 1745475), (15, 1280015), (17, 1129425), (25, 768009), (33, 581825), (37, 518925), (51, 376475), (55, 349095), (75, 256003), (85, 225885), (111, 172975), (165, 116365), (185, 103785), (187, 102675), (255, 75295), (275, 69819), (407, 47175), (425, 45177), (555, 34595), (561, 34225), (629, 30525), (825, 23273), (925, 20757), (935, 20535), (1221, 15725), (1275, 15059), (1369, 14025), (1887, 10175), (2035, 9435), (2775, 6919), (2805, 6845), (3145, 6105), (4107, 4675)]