21892480

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{433}}^1$

素因数の和:531

約数の個数: 64

約数和(自身を含む): 53121600

約数和(自身を除く): 31229120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 433, 632, 640, 790, 866, 1264, 1580, 1732, 2165, 2528, 3160, 3464, 4330, 5056, 6320, 6928, 8660, 10112, 12640, 13856, 17320, 25280, 27712, 34207, 34640, 50560, 55424, 68414, 69280, 136828, 138560, 171035, 273656, 277120, 342070, 547312, 684140, 1094624, 1368280, 2189248, 2736560, 4378496, 5473120, 10946240, 21892480]

約数ペア:

[(1, 21892480), (2, 10946240), (4, 5473120), (5, 4378496), (8, 2736560), (10, 2189248), (16, 1368280), (20, 1094624), (32, 684140), (40, 547312), (64, 342070), (79, 277120), (80, 273656), (128, 171035), (158, 138560), (160, 136828), (316, 69280), (320, 68414), (395, 55424), (433, 50560), (632, 34640), (640, 34207), (790, 27712), (866, 25280), (1264, 17320), (1580, 13856), (1732, 12640), (2165, 10112), (2528, 8660), (3160, 6928), (3464, 6320), (4330, 5056)]