21804880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{16033}}^1$

素因数の和:16063

約数の個数: 40

約数和(自身を含む): 53681832

約数和(自身を除く): 31876952

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 16033, 32066, 64132, 80165, 128264, 160330, 256528, 272561, 320660, 545122, 641320, 1090244, 1282640, 1362805, 2180488, 2725610, 4360976, 5451220, 10902440, 21804880]

約数ペア:

[(1, 21804880), (2, 10902440), (4, 5451220), (5, 4360976), (8, 2725610), (10, 2180488), (16, 1362805), (17, 1282640), (20, 1090244), (34, 641320), (40, 545122), (68, 320660), (80, 272561), (85, 256528), (136, 160330), (170, 128264), (272, 80165), (340, 64132), (680, 32066), (1360, 16033)]