215331487

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{491}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 266010624

約数和(自身を除く): 50679137

約数列:

[1, 7, 31, 43, 47, 217, 301, 329, 491, 1333, 1457, 2021, 3437, 9331, 10199, 14147, 15221, 21113, 23077, 62651, 106547, 147791, 161539, 438557, 654503, 715387, 992311, 4581521, 5007709, 6946177, 30761641, 215331487]

約数ペア:

[(1, 215331487), (7, 30761641), (31, 6946177), (43, 5007709), (47, 4581521), (217, 992311), (301, 715387), (329, 654503), (491, 438557), (1333, 161539), (1457, 147791), (2021, 106547), (3437, 62651), (9331, 23077), (10199, 21113), (14147, 15221)]