21231080960

素因数分解:

$2^9\times 5^1\times {\mathrm{29}}^1\times {\mathrm{285979}}^1$

素因数の和:286031

約数の個数: 80

約数和(自身を含む): 52660357200

約数和(自身を除く): 31429276240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 512, 580, 640, 928, 1160, 1280, 1856, 2320, 2560, 3712, 4640, 7424, 9280, 14848, 18560, 37120, 74240, 285979, 571958, 1143916, 1429895, 2287832, 2859790, 4575664, 5719580, 8293391, 9151328, 11439160, 16586782, 18302656, 22878320, 33173564, 36605312, 41466955, 45756640, 66347128, 73210624, 82933910, 91513280, 132694256, 146421248, 165867820, 183026560, 265388512, 331735640, 366053120, 530777024, 663471280, 732106240, 1061554048, 1326942560, 2123108096, 2653885120, 4246216192, 5307770240, 10615540480, 21231080960]

約数ペア:

[(1, 21231080960), (2, 10615540480), (4, 5307770240), (5, 4246216192), (8, 2653885120), (10, 2123108096), (16, 1326942560), (20, 1061554048), (29, 732106240), (32, 663471280), (40, 530777024), (58, 366053120), (64, 331735640), (80, 265388512), (116, 183026560), (128, 165867820), (145, 146421248), (160, 132694256), (232, 91513280), (256, 82933910), (290, 73210624), (320, 66347128), (464, 45756640), (512, 41466955), (580, 36605312), (640, 33173564), (928, 22878320), (1160, 18302656), (1280, 16586782), (1856, 11439160), (2320, 9151328), (2560, 8293391), (3712, 5719580), (4640, 4575664), (7424, 2859790), (9280, 2287832), (14848, 1429895), (18560, 1143916), (37120, 571958), (74240, 285979)]