21564160

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1$

素因数の和:1029

約数の個数: 72

約数和(自身を含む): 54746496

約数和(自身を除く): 33182336

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 991, 1088, 1280, 1360, 1982, 2176, 2720, 3964, 4352, 4955, 5440, 7928, 9910, 10880, 15856, 16847, 19820, 21760, 31712, 33694, 39640, 63424, 67388, 79280, 84235, 126848, 134776, 158560, 168470, 253696, 269552, 317120, 336940, 539104, 634240, 673880, 1078208, 1268480, 1347760, 2156416, 2695520, 4312832, 5391040, 10782080, 21564160]

約数ペア:

[(1, 21564160), (2, 10782080), (4, 5391040), (5, 4312832), (8, 2695520), (10, 2156416), (16, 1347760), (17, 1268480), (20, 1078208), (32, 673880), (34, 634240), (40, 539104), (64, 336940), (68, 317120), (80, 269552), (85, 253696), (128, 168470), (136, 158560), (160, 134776), (170, 126848), (256, 84235), (272, 79280), (320, 67388), (340, 63424), (544, 39640), (640, 33694), (680, 31712), (991, 21760), (1088, 19820), (1280, 16847), (1360, 15856), (1982, 10880), (2176, 9910), (2720, 7928), (3964, 5440), (4352, 4955)]