21000969857

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{29399}}^1$

素因数の和:29597

約数の個数: 32

約数和(自身を含む): 26078976000

約数和(自身を除く): 5078006143

約数列:

[1, 7, 19, 41, 131, 133, 287, 779, 917, 2489, 5371, 5453, 17423, 29399, 37597, 102049, 205793, 558581, 714343, 1205359, 3851269, 3910067, 8437513, 22901821, 26958883, 73174111, 157902029, 160312747, 512218777, 1105314203, 3000138551, 21000969857]

約数ペア:

[(1, 21000969857), (7, 3000138551), (19, 1105314203), (41, 512218777), (131, 160312747), (133, 157902029), (287, 73174111), (779, 26958883), (917, 22901821), (2489, 8437513), (5371, 3910067), (5453, 3851269), (17423, 1205359), (29399, 714343), (37597, 558581), (102049, 205793)]