217422141

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 304128000

約数和(自身を除く): 86705859

約数列:

[1, 3, 47, 79, 131, 141, 149, 237, 393, 447, 3713, 6157, 7003, 10349, 11139, 11771, 18471, 19519, 21009, 31047, 35313, 58557, 486403, 553237, 917393, 1459209, 1542001, 1659711, 2752179, 4626003, 72474047, 217422141]

約数ペア:

[(1, 217422141), (3, 72474047), (47, 4626003), (79, 2752179), (131, 1659711), (141, 1542001), (149, 1459209), (237, 917393), (393, 553237), (447, 486403), (3713, 58557), (6157, 35313), (7003, 31047), (10349, 21009), (11139, 19519), (11771, 18471)]